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Lorentz gas, Gaussian thermostat, Electrical current, Steady state
---------------0202190806514
Content-Type: application/x-tex; name="bdlr_d.tex"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="bdlr_d.tex"

%%%%%%%%%%%%%%%%%%%%%%%%  FORMATO  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



\newcount\mgnf\newcount\tipi\newcount\tipoformule
\newcount\aux\newcount\driver\newcount\cind\global\newcount\bz
\newcount\tipobib\newcount\stile\newcount\modif
\newcount\noteno\noteno=1\newcount\pos\newcount\figure

\newdimen\stdindent\newdimen\bibskip
\newdimen\maxit\maxit=0pt

\stile=0         %0->articolo 1->tesi
\tipobib=1       %tipo bibliografia 1->numerica 0->simbolica
\bz=0            %1->bozza 0->finale
\cind=0          %0->niente indice
\mgnf=0          %ingrandimento
\tipoformule=0   %=0 da numeroparagrafo.numeroformula; =1 numero
                 %scritto
\aux=1           %=0 non produce output sullo schermo per le formule, =1 si. 
\pos=1		 %=0 figure dove messe, 1 decide il tex               
\figure=1        %=0 niente figure


%%%%%%%%%%%%%%%%%%%%%%%%%%%%  INCIPIT  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




\ifnum\mgnf=0
   \magnification=\magstep0 
   \hsize=17truecm\vsize=24truecm\hoffset=-0.5truecm\voffset=-1.0truecm
   \parindent=4.pt\stdindent=\parindent\fi
\ifnum\mgnf=1
   \magnification=\magstep1\hoffset=-0.5truecm
   \voffset=-1.0truecm\hsize=18truecm\vsize=24.truecm
   \baselineskip=14pt plus0.1pt minus0.1pt \parindent=6pt
   \lineskip=4pt\lineskiplimit=0.1pt      \parskip=0.1pt plus1pt
   \stdindent=\parindent\fi
\ifnum\mgnf=2
   \magnification=\magstep2\hoffset=-1.5truecm
   \voffset=-1.0truecm\hsize=19truecm\vsize=24.truecm
   \baselineskip=14pt plus0.1pt minus0.1pt \parindent=6pt
   \lineskip=4pt\lineskiplimit=0.1pt\fi


%%%%%%%%%%%%%%%%%%%%%%%%%%%%  STILI  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\fine#1{}
\def\draft#1{\bz=1\ifnum\mgnf=1\baselineskip=22pt 
   \else\baselineskip=16pt\fi
   \ifnum\stile=0\headline={\hfill DRAFT #1}\fi\raggedbottom
    \setbox150\vbox{\parindent=0pt\centerline{\bf Figures' captions}\*}
    \def\gnuins ##1 ##2 ##3{\gnuinsf {##1} {##2} {##3}}
    \def\gnuin ##1 ##2 ##3 ##4 ##5 ##6{\gnuinf {##1} {##2} {##3} 
		{##4} {##5} {##6}} 
    \def\eqfig##1##2##3##4##5##6{\eqfigf {##1} {##2} {##3} {##4} {##5} {##6}}
    \def\eqfigbis##1##2##3##4##5##6##7	
             {\eqfigbisf {##1} {##2} {##3} {##4} {##5} {##6} {##7}}
    \def\eqfigfor##1##2##3##4##5##6##7
             {\eqfigforf {##1} {##2} {##3} {##4} {##5} {##6} {##7}}
      \def\fine ##1{\vfill\eject\parindent=0pt
	 	\def\geq(####1){}
               \unvbox150\vfill\eject\raggedbottom
                \centerline{FIGURES}\unvbox149 ##1}}


\def\large{\draft{}\bz=0\headline={\hfill}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  PRIMA PAGINA  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



\newcount\prau

\def\titolo#1{\setbox197\vbox{ 
\leftskip=0pt plus16em \rightskip=\leftskip
\spaceskip=.3333em \xspaceskip=.5em \parfillskip=0pt
\pretolerance=9999  \tolerance=9999
\hyphenpenalty=9999 \exhyphenpenalty=9999
\ftitolo #1}}
\def\abstract#1{\setbox198\vbox{
    \centerline{\vbox{\advance\hsize by -2cm \parindent=0pt\it Abstract: #1}}}}
\def\parole#1{\setbox195\hbox{
     \centerline{\vbox{\advance\hsize by -2cm \parindent=0pt Keywords: #1.}}}}
\def\autore#1#2{\setbox199\hbox{\unhbox199\ifnum\prau=0 #1%
\else, #1\fi\global\advance\prau by 1$^{\simbau}$}
     \setbox196\vbox{\advance\hsize by -\parindent\copy196\ottopunti\item{$^{\simbau}$}{#2}}}
\def\prima{\unvbox197\vskip1truecm\centerline{\unhbox199}\footnote{}{\unvbox196}
\vskip1truecm\unvbox198\vskip1truecm\copy195}

\def\simbau{\ifcase\prau
	\or \dagger \or \ddagger \or * \or \star \or \bullet\fi}




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  GRECO  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




\let\a=\alpha \let\b=\beta  \let\g=\gamma    \let\d=\delta \let\e=\varepsilon
\let\z=\zeta  \let\h=\eta   \let\th=\vartheta\let\k=\kappa \let\l=\lambda
\let\m=\mu    \let\n=\nu    \let\x=\xi       \let\p=\pi    \let\r=\rho
\let\s=\sigma \let\t=\tau   \let\iu=\upsilon \let\f=\varphi\let\ch=\chi
\let\ps=\psi  \let\o=\omega \let\y=\upsilon
\let\G=\Gamma \let\D=\Delta  \let\Th=\Theta  \let\L=\Lambda\let\X=\Xi
\let\P=\Pi    \let\Si=\Sigma \let\F=\Phi     \let\Ps=\Psi  \let\O=\Omega
\let\U=\Upsilon
\let\ge=\geq
\let\le=\leq
\let\is=\i




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  ORA E DATA  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




{\count255=\time\divide\count255 by 60 \xdef\oramin{\number\count255}
        \multiply\count255 by-60\advance\count255 by\time
   \xdef\oramin{\oramin:\ifnum\count255<10 0\fi\the\count255}}
\def\ora{\oramin }

\def\data{\number\day/\ifcase\month\or gennaio \or febbraio \or marzo \or
aprile \or maggio \or giugno \or luglio \or agosto \or settembre
\or ottobre \or novembre \or dicembre \fi/\number\year;\ \ora}

\setbox200\hbox{$\scriptscriptstyle \data $}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  NUMERAZIONE PAGINE  %%%%%%%%%%%%%%%%%%%%%%%



\newcount\pgn \pgn=1
\newcount\firstpage

\def\foglio{\number\numsec:\number\pgn\global\advance\pgn by 1}
\def\foglioa{A\number\numsec:\number\pgn\global\advance\pgn by 1}

\def\pagina{\vfill\eject}
\def\ppagina{\ifodd\pageno\pagina\null\pagina\else\pagina\fi}
\def\ppaginan{\ifodd-\pageno\pagina\null\pagina\else\pagina\fi}

\def\setind{\firstpage=\pageno}
\def\setcap#1{\null\def\titlecap{#1}\global\firstpage=\pageno}
\def\titletesi{Indici critici per sistemi fermionici in una dimensione}
\def\nopagenumbers{\headline={\hfil}\footline={\hfil}}

\ifnum\stile=1
  \def\pagenumbers{\headline={%
  \ifnum\pageno=\firstpage\hfil\else%
     \ifodd\pageno\hfill{\sc\titlecap}~~{\bf\folio}% 
      \else{\bf\folio}~~{\sc\titletesi}\hfill\fi\fi}
  \footline={\ifnum\bz=0
                   \hfill\else\rlap{\hbox{\copy200}\ $\st[\foglio]$}\hfill\fi}}
  \def\pagenumbersind{\headline={%
  \ifnum\pageno=\firstpage\hfil\else%
    \ifodd\pageno\hfill{\rm\romannumeral-\pageno}% 
     \else{\rm\romannumeral-\pageno}\hfill\fi\fi}
  \footline={\ifnum\bz=0
                   \hfill\else\rlap{\hbox{\copy200}\ $\st[\foglio]$}\hfill\fi}}
\else
  \def\pagenumbers{\headline={\hfill}
     \footline={\ifnum\bz=0\hfill\folio\hfill
                \else\rlap{\hbox{\copy200}\ $\st[\foglio]$}
		   \hfill\folio\hfill\fi}}
\fi

\pagenumbers

\def\numeropag#1{
   \ifnum #1<0 \romannumeral -#1\else \number #1\fi
   }




%%%%%%%%%%%%%%%%%  EQUAZIONI CON NOMI SIMBOLICI  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%
%%% per assegnare un nome simbolico ad una equazione basta
%%% scrivere \Eq(...) o, in \eqalignno, \eq(...) o,
%%% nelle appendici, \Eqa(...) o \eqa(...):
%%% dentro le parentesi e al posto dei ...
%%% si puo' scrivere qualsiasi commento;
%%% per assegnare un nome simbolico ad una figura, basta scrivere
%%% \geq(...); per avere i nomi
%%% simbolici segnati a sinistra delle formule e delle figure si deve
%%% dichiarare il documento come bozza, iniziando il testo con
%%% \BOZZA. 
%%% All' inizio di ogni paragrafo si devono definire il
%%% numero del paragrafo e della prima formula dichiarando
%%% \numsec=... \numfor=...  (brevetto Eckmannn); all'inizio del lavoro
%%% bisogna porre \numfig=1 (il numero delle figure non contiene la sezione.
%%% Si possono citare formule o figure seguenti; le corrispondenze fra nomi
%%% simbolici e numeri effettivi sono memorizzate nel file \jobname.aux, che
%%% viene letto all'inizio, se gia' presente. E' possibile citare anche
%%% formule o figure che appaiono in altri file, purche' sia presente il
%%% corrispondente file .aux.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




\global\newcount\numsec\global\newcount\numfor
\global\newcount\numfig\global\newcount\numpar
\global\newcount\numteo\global\newcount\numlem

\numfig=1\numsec=0

\gdef\profonditastruttura{\dp\strutbox}
\def\senondefinito#1{\expandafter\ifx\csname #1\endcsname\relax}
\def\SIA #1,#2,#3 {\senondefinito{#1#2}%
\expandafter\xdef\csname#1#2\endcsname{#3}\else%
\write16{???? ma #1,#2 e' gia' stato definito !!!!}\fi}
\def\etichetta(#1){(\veroparagrafo.\veraformula)
\SIA e,#1,(\veroparagrafo.\veraformula)
 \global\advance\numfor by 1
\write15{\string\FU (#1){\equ(#1)}}
\9{ \write16{ EQ \equ(#1) == #1  }}}
\def \FU(#1)#2{\SIA fu,#1,#2 }
\def\etichettaa(#1){(A\veroparagrafo.\veraformula)
 \SIA e,#1,(A\veroparagrafo.\veraformula)
 \global\advance\numfor by 1
\write15{\string\FU (#1){\equ(#1)}}
\9{ \write16{ EQ \equ(#1) == #1  }}}
\def \FU(#1)#2{\SIA fu,#1,#2 }
\def\tetichetta(#1){\veroparagrafo.\veroteorema
\SIA e,#1,{\veroparagrafo.\veroteorema}
\global\advance\numteo by1
\write15{\string\FU (#1){\equ(#1)}}%
\9{\write16{ EQ \equ(#1) == #1}}}
\def\tetichettaa(#1){A\veroparagrafo.\veroteorema
\SIA e,#1,{A\veroparagrafo.\veroteorema}
\global\advance\numteo by1
\write15{\string\FU (#1){\equ(#1)}}%
\9{\write16{ EQ \equ(#1) == #1}}}
\def\letichetta(#1){\veroparagrafo.\verolemma
\SIA e,#1,{\veroparagrafo.\verolemma}
\global\advance\numlem by1
\write15{\string\FU (#1){\equ(#1)}}%
\9{\write16{ EQ \equ(#1) == #1}}}
\def\getichetta(#1){{\bf Fig. \verafigura}:
 \SIA e,#1,{\verafigura}
 \global\advance\numfig by 1
\write15{\string\FU (#1){\equ(#1)}}
\9{ \write16{ Fig. \equ(#1) ha simbolo  #1  }}}

\def\veroparagrafo{\number\numsec}\def\veraformula{\number\numfor}
\def\verafigura{\number\numfig}\def\veroteorema{\number\numteo}
\def\verolemma{\number\numlem}

\def\geq(#1){\getichetta(#1)\galato(#1)}
\def\Eq(#1){\eqno{\etichetta(#1)\alato(#1)}}
\def\eq(#1){&\etichetta(#1)\alato(#1)}
\def\Eqa(#1){\eqno{\etichettaa(#1)\alato(#1)}}
\def\eqa(#1){&\etichettaa(#1)\alato(#1)}
\def\teq(#1){\tetichetta(#1)\talato(#1)}
\def\teqa(#1){\tetichettaa(#1)\talato(#1)}
\def\leq(#1){\letichetta(#1)\talato(#1)}

\def\Eqr{\eqno(\veroparagrafo.\veraformula)\advance\numfor by 1}
\def\eqr{&(\veroparagrafo.\veraformula)\advance\numfor by 1}
\def\Eqar{\eqno(A\veroparagrafo.\veraformula)\advance\numfor by 1}
\def\eqar{&(A\veroparagrafo.\veraformula)\advance\numfor by 1}

\def\eqv(#1){\senondefinito{fu#1}$\clubsuit#1$\write16{Manca #1 !}%
\else\csname fu#1\endcsname\fi}
\def\equ(#1){\senondefinito{e#1}\eqv(#1)\else\csname e#1\endcsname\fi}




%%%%%%%%%%%%%%%%%%%%%%%%%%  BOZZA  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newdimen\gwidth


\def\commenta#1{\ifnum\bz=1\strut \vadjust{\kern-\profonditastruttura
 \vtop to \profonditastruttura{\baselineskip
 \profonditastruttura\vss
 \rlap{\kern\hsize\kern0.1truecm
  \vbox{\hsize=1.7truecm\raggedright\nota\noindent #1}}}}\fi}
\def\talato(#1){\ifnum\bz=1\strut \vadjust{\kern-\profonditastruttura
 \vtop to \profonditastruttura{\baselineskip
 \profonditastruttura\vss
 \rlap{\kern-1.2truecm{$\scriptstyle#1$}}}}\fi}
\def\alato(#1){\ifnum\bz=1
 {\vtop to \profonditastruttura{\baselineskip
 \profonditastruttura\vss
 \rlap{\kern-\hsize\kern-1.2truecm{$\scriptstyle #1$}}}}\fi}
\def\galato(#1){\ifnum\bz=1 \gwidth=0pt %\divide\gwidth by 2
 {\vtop to \profonditastruttura{\baselineskip
 \profonditastruttura\vss
 \rlap{\kern-\gwidth\kern-2.2truecm{$\scriptstyle#1$}}}}\fi}






%%%%%%%%%%%%%%%%%%%%%%%%  CARATTERI  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\magg{\ifnum\mgnf=0\magstep0\else\magstep1\fi}

\newskip\ttglue
\font\dodicirm=cmr12\font\dodicibf=cmbx12\font\dodiciit=cmti12
\font\ftitolo=cmbx12 %scaled \magstep2
\font\eighttt=cmtt8 \font\sevenit=cmti7  \font\sevensl=cmsl8
\font\sc=cmcsc10
\font\fparte=cmbx12 scaled\magstep2
\font\msxtw=msbm10 scaled\magstep1
\font\euftw=eufm10 scaled\magstep1
\font\msytw=msbm10 scaled\magstep1
\font\msytww=msbm8 scaled\magstep1
\font\msytwww=msbm7 scaled\magstep1
\font\indbf=cmbx10 scaled\magstep2
%%%%%%%

\def\settepunti{\def\rm{\fam0\sevenrm}
\textfont0=\sevenrm \scriptfont0=\fiverm \scriptscriptfont0=\fiverm
\textfont1=\seveni \scriptfont1=\fivei   \scriptscriptfont1=\fivei
\textfont2=\sevensy \scriptfont2=\fivesy   \scriptscriptfont2=\fivesy
\textfont3=\tenex \scriptfont3=\tenex   \scriptscriptfont3=\tenex
\textfont\itfam=\sevenit  \def\it{\fam\itfam\sevenit}%
\textfont\slfam=\sevensl  \def\sl{\fam\slfam\sevensl}%
\textfont\ttfam=\eighttt  \def\tt{\fam\ttfam\eighttt}
\textfont\bffam=\sevenbf 
\scriptfont\bffam=\fivebf \scriptscriptfont\bffam=\fivebf  
\def\bf{\fam\bffam\sevenbf}%
\tt \ttglue=.5em plus.25em minus.15em
\setbox\strutbox=\hbox{\vrule height6.5pt depth1.5pt width0pt}%
\let\sc=\fiverm \normalbaselines\rm
\ifnum\mgnf=0\baselineskip=8pt\normalbaselineskip=8pt
\else\baselineskip=14pt\normalbaselineskip=14pt\fi}

\font\eightrm=cmr8 scaled \magg
\font\eightbf=cmbx8 scaled \magg
\font\eightit=cmti8 scaled \magg
\font\eightsl=cmsl8 scaled \magg
\font\eighttt=cmtt8 scaled \magg
\font\eightsy=cmsy8 scaled \magg
\font\eighti=cmmi8 scaled \magg
\font\sixrm=cmr6 scaled \magg
\font\sixbf=cmbx6 scaled \magg
\font\sixit=cmti6 scaled \magg
\font\sixsl=cmsl6 scaled \magg
\font\sixtt=cmtt6 scaled \magg
\font\sixsy=cmsy6 scaled \magg
\font\sixi=cmmi6 scaled \magg

\def\ottopunti{\def\rm{\fam0\eightrm}%
\textfont0=\eightrm\scriptfont0=\sixrm\scriptscriptfont0=\fiverm%
\textfont1=\eighti\scriptfont1=\sixi\scriptscriptfont1=\fivei%
\textfont2=\eightsy\scriptfont2=\sixsy\scriptscriptfont2=\fivesy%
\textfont3=\tenex\scriptfont3=\tenex\scriptscriptfont3=\tenex%
\textfont\itfam=\eightit\def\it{\fam\itfam\eightit}%%
\textfont\slfam=\eightsl\def\sl{\fam\slfam\eightsl}%
\textfont\ttfam=\eighttt\def\tt{\fam\ttfam\eighttt}%
\textfont\bffam=\eightbf %
\scriptfont\bffam=\sixbf\scriptscriptfont\bffam=\fivebf % 
\def\bf{\fam\bffam\eightbf}%
\ttglue=.5em plus.25em minus.15em%
\setbox\strutbox=\hbox{\vrule height6.5pt depth1.5pt width0pt}%
\let\sc=\fiverm \normalbaselines\rm
\ifnum\mgnf=0\baselineskip=8pt\normalbaselineskip=8pt
\else\baselineskip=18pt\normalbaselineskip=18pt\fi}%

\let\nota=\ottopunti


\def\RRR{\hbox{\msytw R}} \def\rrrr{\hbox{\msytww R}}
\def\rrr{\hbox{\msytwww R}} \def\CCC{\hbox{\msytw C}}
\def\cccc{\hbox{\msytww C}} \def\ccc{\hbox{\msytwww C}}
\def\NNN{\hbox{\msytw N}} \def\nnnn{\hbox{\msytww N}}
\def\nnn{\hbox{\msytwww N}} \def\ZZZ{\hbox{\msytw Z}}
\def\zzzz{\hbox{\msytww Z}} \def\zzz{\hbox{\msytwww Z}}
\def\TTT{\hbox{\msytw T}} \def\tttt{\hbox{\msytww T}}
\def\ttt{\hbox{\msytwww T}}


%%%%%%%%

\font\tenmib=cmmib10
\font\sevenmib=cmmib10 scaled 800

\textfont5=\tenmib  \scriptfont5=\sevenmib  \scriptscriptfont5=\fivei

\mathchardef\aaa= "050B
\mathchardef\xxx= "0518
\mathchardef\oo = "0521
\mathchardef\Dp = "0540
\mathchardef\H  = "0548
\mathchardef\FFF= "0546
\mathchardef\ppp= "0570
\mathchardef\nnn= "0517


%%%%%%%%%%%%%%%%%%%%%%%%%%%  GRAFICA  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%TO PRINT THE POSTCRIPT FIGURES THE DRIVER NUMBER MIGHT HAVE TO BE
%ADJUSTED. IF the 4 choices 0,1,2,3 do not work set in the following line
%the \driver variable to =5. Setting it =0 works with dvilaser setting it
%=1 works with dvips, =2 with psprint (hopefully).
%Using =5 prints incomplete figures (but still understandable from the
%text). The value MUST be set =5 if the printer is not a postscript one.

%%% the values =0,1 have been tested. The figures are automatically
%%% generated.
%
% Inizializza le macro postscript e il tipo di driver di stampa.
% Attualmente le istruzioni postscript vengono utilizzate solo se il driver
% e' DVILASER ( \driver=0 ), DVIPS ( \driver=1) o PSPRINT ( \driver=2);
% qualunque altro valore di \driver produce un output in cui le figure
% contengono solo i caratteri inseriti con istruzioni TEX (vedi avanti).
%
% 1) comando \ins#1#2#3
% Inserisce una scatola contenente #3 in modo che l'angolo superiore sinistro
% occupi la posizione (#1,#2)
% 2) comando \eqfig#1#2#3#4#5
% Crea una scatola di dimensioni #1x#2 contenente il disegno descritto in
% #4.ps; in questo disegno si possono introdurre delle stringhe usando \ins
% e mettendo le istruzioni relative in #3 (che puo' anche mancare);
% Il file esterno #4.ps contiene le istruzioni postscript, che devono 
% essere scritte
% presupponendo che l'origine sia nell'angolo inferiore sinistro della
% scatola, mentre per il resto l'ambiente grafico e' quello standard.
% Infine #5 viene scritto a destra della figura e e' un testo tex,
% tipicamente fig.x oppure \equ(x.y) se la si considera una formula.
% Se \driver=2, e' necessario dilatare la figura in accordo al valore di
% \magnification, correggendo i parametri P1 e P2 nell'istruzione
%         \special{#4.ps P1 P2 scale}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



\newdimen\xshift \newdimen\xwidth \newdimen\yshift \newdimen\ywidth
\newdimen\laln

\ifnum\pos=0\def\midinsert{}\def\endinsert{}\fi

\def\ins#1#2#3{\nointerlineskip\vbox to0pt {\kern-#2 \hbox{\kern#1 #3}
\vss}}

\def\lineauno#1#2#3#4{
\xwidth=#1 \xshift=\hsize \advance\xshift 
by-\xwidth \divide\xshift by 2
\yshift=#2 \divide\yshift by 2
\parindent=0pt
\line{\hglue\xshift \vbox to #2{\hsize #1\vfil 
#3 \special{psfile=#40.ps }
}\hfill}}

\def\unafig#1#2#3#4#5#6{
\setbox99\vbox{\parindent=0pt\par\lineauno{#1}{#2}{#3}{#4}
\nobreak
\smallskip
\didascalia{\geq(#6)#5}}}

\def\eqfig#1#2#3#4#5#6{
\unafig{#1}{#2}{#3}{#4}{#5}{#6}
\midinsert\unvbox99\endinsert
}

\def\eqfigf#1#2#3#4#5#6{
\unafig{#1}{#2}{#3}{#4}{#5}{#6}
\midinsert\unvbox99\endinsert
\setbox149\vbox{\unvbox149 \*\* \centerline{Fig. \equ(#6)} 
\nobreak
\*
\nobreak
\lineauno{#1}{#2}{#3}{#4}}
\setbox150\vbox{\unvbox150 \parindent=0pt\*{\bf Fig. \equ(#6)}: #5}
}

\def\lineadue#1#2#3#4#5{
\xwidth=#1 \multiply\xwidth by 2 
\xshift=\hsize \advance\xshift 
by-\xwidth \divide\xshift by 3
\yshift=#2 \divide\yshift by 2
\ywidth=#2
\parindent=0pt
\line{\hfill%\hglue\xshift 
\vbox to \ywidth{\vfil #3 \special{psfile=#50.ps}}
\hskip\xshift%
\vbox to \ywidth{\vfil #4 \special{psfile=#51.ps}}}}

\def\duefig#1#2#3#4#5#6#7{
\setbox99\vbox{\parindent=0pt\par\lineadue{#1}{#2}{#3}{#4}{#5}
\nobreak
\*\*
\didascalia{\geq(#7)#6}}}


\def\eqfigbisf#1#2#3#4#5#6#7{
\duefig{#1}{#2}{#3}{#4}{#5}{#6}{#7}
\midinsert\unvbox99\endinsert
\setbox149\vbox{\unvbox149 \*\* \centerline{Fig. \equ(#7)} 
\nobreak
\*
\nobreak
\lineadue{#1}{#2}{#3}{#4}{#5}}
\setbox150\vbox{\unvbox150 \parindent=0pt\*{\bf Fig. \equ(#7)}: #6\*}
}


\def\eqfigbis#1#2#3#4#5#6#7{
\duefig{#1}{#2}{#3}{#4}{#5}{#6}{#7}
\midinsert\unvbox99\endinsert
}


\def\dimenfor#1#2{\par\xwidth=#1 \multiply\xwidth by 2 
\xshift=\hsize \advance\xshift 
by-\xwidth \divide\xshift by 3
\divide\xwidth by 2 
\yshift=#2 %\divide\yshift by 2
\ywidth=#2}

\def\lineaquattro#1#2#3#4#5{
\parindent=0pt
\hbox to \hsize{\hskip\xshift 
\hbox to \xwidth{\vbox to \ywidth{\vfil#1\special{psfile=#50.ps}}\hfill}%
\hskip\xshift%
\hbox to \xwidth{\vbox to \ywidth{\vfil#2\special{psfile=#51.ps}}\hfill}\hfill}
\nobreak
\line{\hglue\xshift 
\hbox to \xwidth{\vbox to \ywidth{\vfil #3 \special{psfile=#52.ps}}\hfill}%
\hglue\xshift
\hbox to \xwidth{\vbox to\ywidth {\vfil #4 \special{psfile=#53.ps}}\hfill}\hfill}}

\def\quattrofig#1#2#3#4#5#6#7{
\setbox99\vbox{\parindent=0pt\par\lineaquattro{#1}{#2}{#3}{#4}{#5}
\nobreak
\*\*
\didascalia{\geq(#7)#6}}}

\def\eqfigforf#1#2#3#4#5#6#7{
\quattrofig{#1}{#2}{#3}{#4}{#5}{#6}{#7}
\midinsert\unvbox99\endinsert
\setbox149\vbox{\unvbox149 \*\* \centerline{Fig. \equ(#7)} 
\nobreak
\*
\nobreak
\lineadue{#1}{#2}{#3}{#4}{#5}}
\setbox150\vbox{\unvbox150 \parindent=0pt\*{\bf Fig. \equ(#7)}: #6\*}}


\def\eqfigfor#1#2#3#4#5#6#7{
\quattrofig{#1}{#2}{#3}{#4}{#5}{#6}{#7}
\midinsert\unvbox99\endinsert
}

\def\eqfigter#1#2#3#4#5#6#7{
\line{\hglue\xshift 
\vbox to \ywidth{\vfil #1 \special{psfile=#2.ps}}
\hglue30pt
\vbox to \ywidth{\vfil #3 \special{psfile=#4.ps}}\hfill}
\multiply\xshift by 3 \advance\xshift by \xwidth \divide\xshift by 2
\line{\hfill\hbox{#7}}
\line{\hglue\xshift 
\vbox to \ywidth{\vfil #5 \special{psfile=#6.ps}}}}



%%%%%%%%%%%%%%%%%%%%%%%%%%   DISEGNO  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% permette di scrivere file postscript in un test tex:
% il file postcript va scritto nel file tex riga per riga nella forma
% \8< .......... > 
% dove i puntini stanno per una riga del file. A queste righe va 
% premesso \figini#1 e posposto \figfin
% Il file postscript riceve il  nome #1.ps
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



\def\7{\ifnum\modif=1\write13\else\write12\fi}
\def\8{\immediate\write13}

\def\figini#1{
\catcode`\%=12\catcode`\{=12\catcode`\}=12
\catcode`\<=1\catcode`\>=2
\immediate\openout13=#1.ps
\immediate\openout12=null.tex}

\def\figfin{
\closeout13
\catcode`\%=14\catcode`\{=1
\catcode`\}=2\catcode`\<=12\catcode`\>=12}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  GRAFICI GNUPLOT  %%%%%%%%%%%%%%%%%%%%%%%%%%%



\def\gnuin #1 #2 #3 #4 #5 #6{\midinsert\vbox{\vbox to 260pt{
\hbox to 420pt{
\hbox to 200pt{\hfill\nota (a)\hfill}\hfill
\hbox to 200pt{\hfill\nota (b)\hfill}}
\vbox to 110pt{\vfill\hbox to 420pt{
\hbox to 200pt{\special{psfile=#1.ps}\hfill}\hfill
\hbox to 200pt{\special{psfile=#2.ps}\hfill}
}}\vfill
\hbox to 420pt{
\hbox to 200pt{\hfill\nota (c)\hfill}\hfill
\hbox to 200pt{\hfill\nota (d)\hfill}}
\vbox to 110pt{\vfill\hbox to 420pt{
\hbox to 200pt{\special{psfile=#3.ps}\hfill}\hfill
\hbox to 200pt{\special{psfile=#4.ps}\hfill}
}}\vfill}
\vskip0.25cm
\0\didascalia{\geq(#5): #6}}
\endinsert}

\def\gnuinf #1 #2 #3 #4 #5 #6{\midinsert\nointerlineskip\vbox to 260pt{
\hbox to 420pt{
\hbox to 200pt{\hfill\nota (a)\hfill}\hfill
\hbox to 200pt{\hfill\nota (b)\hfill}}
\vbox to 110pt{\vfill\hbox to 420pt{
\hbox to 200pt{\special{psfile=#1.ps}\hfill}\hfill
\hbox to 200pt{\special{psfile=#2.ps}\hfill}
}}\vfill
\hbox to 420pt{
\hbox to 200pt{\hfill\nota (c)\hfill}\hfill
\hbox to 200pt{\hfill\nota (d)\hfill}}
\vbox to 110pt{\vfill\hbox to 420pt{
\hbox to 200pt{\special{psfile=#3.ps}\hfill}\hfill
\hbox to 200pt{\special{psfile=#4.ps}\hfill}
}}\vfill}
\?
\0\didascalia{\geq(#5): #6}
\endinsert
\global\setbox150\vbox{\unvbox150 \*\*\0 Fig. \equ(#5): #6}
\global\setbox149\vbox{\unvbox149 \*\*
    \vbox{\centerline{Fig. \equ(#5)(a)} \nobreak
    \vbox to 200pt{\vfill\special{psfile=#1.ps_f}}}\*\*
    \vbox{\centerline{Fig. \equ(#5)(b)}\nobreak
    \vbox to 200pt{\vfill\special{psfile=#2.ps_f}}}\*\*
    \vbox{\centerline{Fig. \equ(#5)(c)}\nobreak
    \vbox to 200pt{\vfill\special{psfile=#3.ps_f}}}\*\*
    \vbox{\centerline{Fig. \equ(#5)(d)}\nobreak
    \vbox to 200pt{\vfill\special{psfile=#4.ps_f}}}
}}

\def\gnuins #1 #2 #3{\midinsert\nointerlineskip
\vbox{\line{\hfill\ifnum\figure=1 \vbox to 310pt{\vfill
\special{psfile=#1.ps}\vskip .4truecm}\hfill\fi\hglue425pt\hfill}
%\*
\0\didascalia{\geq(#2)#3}}
\endinsert}

\def\gnuinsf #1 #2 #3{\midinsert\nointerlineskip
\vbox{\line{\hfill\ifnum\figure=1\vbox to 310pt{\vfill
\special{psfile=#1.ps}\vskip .4truecm}\hfill\fi\hglue380pt\hfill}
%\*
\0\didascalia{\geq(#2)#3}}\endinsert
\global\setbox150\vbox{\unvbox150 \*\0{\bf Fig. \equ(#2)}: #3}
\global\setbox149\vbox{\unvbox149 \*\* 
    \vbox{\centerline{Fig. \equ(#2)}\nobreak
    \ifnum\figure=1\vbox to 300pt{\vfill\special{psfile=#1.ps}}\fi}} 
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  DEFINIZIONI VARIE  %%%%%%%%%%%%%%%%%%%%%%%%%



\def\9#1{\ifnum\aux=1#1\else\relax\fi}
\let\numero=\number
\def\boh{\hbox{$\clubsuit$}\write16{Qualcosa di indefinito a pag. \the\pageno}}
\def\didascalia#1{\vbox{\nota\ifnum\mgnf=0\baselineskip=10pt\normalbaselineskip=10pt
\else\baselineskip=16pt\normalbaselineskip=16pt\fi
\0#1\hfill}\vskip0.3truecm}
\def\frac#1#2{{#1\over #2}}
\def\V#1{\underline{#1}}
\let\dpr=\partial	\let\ciao=\bye
\let\io=\infty		\let\i=\infty
\let\ii=\int		\let\ig=\int
\def\media#1{\langle{#1}\rangle} 	\let\0=\noindent
\def\guida{\leaders\hbox to 1em{\hss.\hss}\hfill}
\def\tende#1{\vtop{\ialign{##\crcr\rightarrowfill\crcr
              \noalign{\kern-1pt\nointerlineskip}
              \hglue3.pt${\scriptstyle #1}$\hglue3.pt\crcr}}}
\def\otto{{\kern-1.truept\leftarrow\kern-5.truept\to\kern-1.truept}}
\def\acapo{\hfill\break}
\def\rar{\rightarrow}	\def\Rar{\Rightarrow}	\def\LRar{\Longrightarrow}
\def\dag{\dagger}
\def\ol#1{\overline{#1}}	\def\ul#1{\underline{#1}}
\def\sign{{\rm sign\,}}
\def\={{ \; \equiv \; }}	\def\su{{\uparrow}}	\def\giu{{\downarrow}}
\ifnum\mgnf=0
    \def\openone{\leavevmode\hbox{\ninerm 1\kern-3.3pt\tenrm1}}%
\fi
\ifnum\mgnf=1
     \def\openone{\leavevmode\hbox{\ninerm 1\kern-3.6pt\tenrm1}}%
\fi
\def\Im{{\rm\,Im\,}}	\def\Re{{\rm\,Re\,}}
\def\lis#1{{\overline #1}}
\def\atan{{\,\rm arctg\,}}
\let\dt=\displaystyle
\def\2{{1\over2}}
\def\txt{\textstyle}
\def\igb{
    \mathop{\raise4.pt\hbox{\vrule height0.2pt depth0.2pt width6.pt}
    \kern0.3pt\kern-9pt\int}}
\def\tst{\textstyle}
\def\st{\scriptscriptstyle}
\let\\=\noindent
\def\*{\vskip0.5truecm}
\def\?{\vskip0.75truecm}
\def\item#1{\vskip0.1truecm\parindent=0pt\par\setbox0=\hbox{#1}
     \hangindent\ifdim\wd0>0.6cm 0.6cm\else\wd0\fi\hangafter 1 #1 \parindent=\stdindent}
\def\sit{\vskip0.1truecm}
\def\annota#1#2{{\footnote{${}^#1$}{\ottopunti
\ifnum\mgnf=0\baselineskip=9pt\normalbaselineskip=9pt
\else\baselineskip=18pt\normalbaselineskip=18pt\fi
\parindent=0pt#2}}}
\def\annotano#1{\annota{\number\noteno}{#1}\advance\noteno by 1}




%%%%%%%%%%%%%%%%%%%%%%%%%%%  LATINORUM  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




\def\etc{\hbox{\sl etc.}}
\def\ap{\hbox{\sl a priori\ }}
\def\aps{\hbox{\sl a posteriori\ }}
\def\ie{\hbox{\sl i.e.\ }}
\def\eg{\hbox{\sl e.g.\ }}
\def\qed{\hfill\break\nobreak\vbox{\vglue.25truecm\line{\hfill\raise1pt 
          \hbox{\vrule height9pt width5pt depth0pt}}}\vglue.25truecm}




%%%%%%%%%%%%%%%%%%%%%%%%%%  DEFINIZIONI LOCALI %%%%%%%%%%%%%%%%%%%%%%%%%%



\def\gu{g^{(u.v.)}}
\def\gi{g^{(i.r.)}}
\def\gint(#1)(#2)(#3){{\cal D}#1^{#2}\,e^{(#1^{#2+},#3#1^{#2-})}}
\def\ps#1#2{\psi^{#1}_{#2}}
\def\pst#1#2{\tilde\psi^{#1}_{#2}}


\def\xx{{\bf x}}  \def\yy{{\bf y}}  \def\zz{{\bf z}}  \def\ww{{\bf w}}
\def\ggg{{\bf g}} \def\ff{{\bf f}}  \def\ee{{\bf e}}  \def\vv{{\bf v}}
\def\kk{{\bf k}}  \def\pp{{\bf p}}  \def\qq{{\bf q}}  \def\nn{{\bf n}}
\def\jj{{\bf j}}  \def\V0{{\bf 0}}  \def\rr{{\bf r}}  \def\tt{{\bf t}}


\def\AA{{\cal A}}\def\BB{{\cal B}}\def\CC{{\cal C}}
\def\DD{{\cal E}}\def\EE{{\cal E}}\def\FF{{\cal F}}
\def\GG{{\cal G}}\def\HH{{\cal H}}\def\II{{\cal I}}
\def\JJ{{\cal J}}\def\KK{{\cal K}}\def\LL{{\cal L}}
\def\MM{{\cal M}}\def\NN{{\cal N}}\def\OO{{\cal O}}
\def\PP{{\cal P}}\def\QQ{{\cal Q}}\def\RR{{\cal R}}
\def\SS{{\cal S}}\def\TT{{\cal T}}\def\UU{{\cal U}}
\def\VV{{\cal V}}\def\WW{{\cal W}}\def\ZZ{{\cal Z}}
\def\XX{{\cal X}}

\def\E#1{{\cal E}_{#1}}
\def\ET#1{{\cal E}^T_{#1}}




%%%%%%%%%%%%%%%%       ISTRUZIONI PER L'INDICE       %%%%%%%%%%%%%%%%%%%%



% file per l'indice
\ifnum\cind=1
\def\prtindex#1{\immediate\write\indiceout{\string\parte{#1}{\the\pageno}}}
\def\capindex#1#2{\immediate\write\indiceout{\string\capitolo{#1}{#2}{\the\pageno}}}
\def\parindex#1#2{\immediate\write\indiceout{\string\paragrafo{#1}{#2}{\the\pageno}}}
\def\subindex#1#2{\immediate\write\indiceout{\string\sparagrafo{#1}{#2}{\the\pageno}}}
\def\appindex#1#2{\immediate\write\indiceout{\string\appendice{#1}{#2}{\the\pageno}}}
\def\paraindex#1#2{\immediate\write\indiceout{\string\paragrafoapp{#1}{#2}{\the\pageno}}}
\def\subaindex#1#2{\immediate\write\indiceout{\string\sparagrafoapp{#1}{#2}{\the\pageno}}}
\def\bibindex#1{\immediate\write\indiceout{\string\bibliografia{#1}{Bibliografia}{\the\pageno}}}
\def\preindex#1{\immediate\write\indiceout{\string\premessa{#1}{\the\pageno}}}
\else
\def\prtindex#1{}
\def\capindex#1#2{}
\def\parindex#1#2{}
\def\subindex#1#2{}
\def\appindex#1#2{}
\def\paraindex#1#2{}
\def\subaindex#1#2{}
\def\bibindex#1{}
\def\preindex#1{}
\fi

\def\leaderfill{\leaders\hbox to 1em{\hss . \hss} \hfill }





%%%%%%%%%%%%%%%%%%%%%%% PARAMETRI DI FORMATO INTERNI %%%%%%%%%%%%%%%%%%%



\newdimen\capsalto \capsalto=0pt
\newdimen\parsalto \parsalto=20pt
\newdimen\sparsalto \sparsalto=30pt
\newdimen\tratitoloepagina \tratitoloepagina=2\parsalto
%
\def\aboveparteskip{\bigskip \bigskip}
\def\belowparteskip{\medskip \medskip}
\def\abovecapitskip{\bigskip}
\def\belowcapitskip{\medskip}
\def\belowparskip{\smallskip}
%



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DEFINIZIONE DI PARTE %%%%%%%%%%%%%%%%%%%%%%%



\def\parte#1#2{
   \9{\immediate\write16
      {#1     pag.\numeropag{#2} }}
   \aboveparteskip 
   \noindent 
   {\ftitolo #1} 
   \hfill {\ftitolo \numeropag{#2}}\par
   \belowparteskip
   }



%%%%%%%%%%%%%%%%%%%%%%%%%% DEFINIZIONE DI PREMESSA %%%%%%%%%%%%%%%%%%%%%%%



\def\premessa#1#2{
   \9{\immediate\write16
      {#1     pag.\numeropag{#2} }}
   \abovecapitskip 
   \noindent 
   {\it #1} 
   \hfill {\rm \numeropag{#2}}\par
   \belowcapitskip
   }



%%%%%%%%%%%%%%%%%%%%%%%%%% DEFINIZIONE DI BIBLIOGRAFIA %%%%%%%%%%%%%%%%%%%


\def\bibliografia#1#2#3{
  \ifnum\stile=1
   \9{\immediate\write16
      {Bibliografia    pag.\numeropag{#3} }}
   \belowcapitskip
   \noindent 
   {\bf Bibliografia} 
   \hfill {\bf \numeropag{#3}}\par
  \else
    \paragrafo{#1}{References}{#3}
\fi
   }



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



\newdimen\newstrutboxheight
\newstrutboxheight=\baselineskip
\advance\newstrutboxheight by -\dp\strutbox
%
\newdimen\newstrutboxdepth
\newstrutboxdepth=\dp\strutbox
%
\newbox\newstrutbox
\setbox\newstrutbox = \hbox{\vrule 
   height \newstrutboxheight 
   width 0pt 
   depth \newstrutboxdepth 
   }
\def\newstrut
   {\relax \ifmmode \copy \newstrutbox \else \unhcopy \newstrutbox \fi}
%
% fondamentale
%
\vfuzz=3.5pt
%
% evita noie con i titoli di una sola riga
%
\newdimen\indexsize \indexsize=\hsize
\advance \indexsize by -\tratitoloepagina
\newdimen\dummy
\newbox\parnum
\newbox\parbody
\newbox\parpage
%


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DEFINIZIONE DI CAPITOLO %%%%%%%%%%%%%%%%%%%%
%


\def\mastercap#1#2#3#4#5{
   \9{\immediate\write16
      {Cap. #3:#4     pag.\numeropag{#5} }}
%
   \abovecapitskip
   \setbox\parnum=\hbox {\kern#1\newstrut{#2}
			{\bf Capitolo~\number#3.}~}
   \dummy=\indexsize
   \advance\indexsize by -\wd\parnum
   \setbox\parbody=\vbox {
      \hsize = \indexsize \noindent \newstrut 
      {\bf #4}
      \newstrut \hss}
   \indexsize=\dummy
   \setbox\parnum=\vbox to \ht\parbody {
      \box\parnum
      \vfill 
      }
   \setbox\parpage = \hbox to \tratitoloepagina {
      \hss {\bf \numeropag{#5}}}
   \noindent \box\parnum\box\parbody\box\parpage\par
   \belowcapitskip
   }
%
\def\capitolo#1#2#3{\mastercap{\capsalto}{}{#1}{#2}{#3}}
%


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% DEFINIZIONE DI APPENDICE %%%%%%%%%%%%%%%%%%%


%
\def\masterapp#1#2#3#4#5{
   \9{\immediate\write16
      {App. #3:#4     pag.\numeropag{#5} }}
%
   \abovecapitskip
   \setbox\parnum=\hbox {\kern#1\newstrut{#2}
			{\bf Appendice~A\number#3:}~}
   \dummy=\indexsize
   \advance\indexsize by -\wd\parnum
   \setbox\parbody=\vbox {
      \hsize = \indexsize \noindent \newstrut 
      {\bf #4}
      \newstrut \hss}
   \indexsize=\dummy
   \setbox\parnum=\vbox to \ht\parbody {
      \box\parnum
      \vfill 
      }
   \setbox\parpage = \hbox to \tratitoloepagina {
      \hss {\bf \numeropag{#5}}}
   \noindent \box\parnum\box\parbody\box\parpage\par
   \belowcapitskip
   }
%
\def\appendice#1#2#3{\masterapp{\capsalto}{}{#1}{#2}{#3}}
%


%%%%%%%%%%%%%% DEFINIZIONE DI PARAGRAFO (PER CAPITOLI) %%%%%%%%%%%%%%%%%%%%
%


\def\masterpar#1#2#3#4#5{
   \9{\immediate\write16
      {par. #3:#4     pag.\numeropag{#5} }}
%
   \setbox\parnum=\hbox {\kern#1\newstrut{#2}\number#3.~}
   \dummy=\indexsize
   \advance\indexsize by -\wd\parnum
   \setbox\parbody=\vbox {
      \hsize = \indexsize \noindent \newstrut 
      #4
      \newstrut \hss}
   \indexsize=\dummy
   \setbox\parnum=\vbox to \ht\parbody {
      \box\parnum
      \vfill 
      }
   \setbox\parpage = \hbox to \tratitoloepagina {
      \hss \numeropag{#5}}
   \noindent \box\parnum\box\parbody\box\parpage\par
   \belowparskip
   }
%
\def\paragrafo#1#2#3{\masterpar{\parsalto}{}{#1}{#2}{#3}}
\def\sparagrafo#1#2#3{\masterpar{\sparsalto}{}{#1}{#2}{#3}}
%



%%%%%%%%%%%%%% DEFINIZIONE DI PARAGRAFO (PER APPENDICI) %%%%%%%%%%%%%%%%%%%



%
\def\masterpara#1#2#3#4#5{
   \9{\immediate\write16
      {par. #3:#4     pag.\numeropag{#5} }}
%
   \setbox\parnum=\hbox {\kern#1\newstrut{#2}A\number#3.~}
   \dummy=\indexsize
   \advance\indexsize by -\wd\parnum
   \setbox\parbody=\vbox {
      \hsize = \indexsize \noindent \newstrut 
      #4
      \newstrut \hss}
   \indexsize=\dummy
   \setbox\parnum=\vbox to \ht\parbody {
      \box\parnum
      \vfill 
      }
   \setbox\parpage = \hbox to \tratitoloepagina {
      \hss \numeropag{#5}}
   \noindent \box\parnum\box\parbody\box\parpage\par
   \belowparskip
   }
%
\def\paragrafoapp#1#2#3{\masterpara{\parsalto}{}{#1}{#2}{#3}}
\def\sparagrafoapp#1#2#3{\masterpara{\sparsalto}{}{#1}{#2}{#3}}
%


%%%%%%%%%%%%%%%%%%%%%%%%%  NUOVE SUDDUVISIONI  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%




\ifnum\stile=1

\def\newcap#1{\setcap{#1}
\vskip2.truecm\advance\numsec by 1
\\{\ftitolo \numero\numsec. #1}
\capindex{\numero\numsec}{#1}
\vskip1.truecm\numfor=1\pgn=1\numpar=1\numteo=1\numlem=1
}

\def\newapp#1{\setcap{#1}
\vskip2.truecm\advance\numsec by 1
\\{\ftitolo A\numero\numsec. #1}
\appindex{A\numero\numsec}{#1}
\vskip1.truecm\numfor=1\pgn=1\numpar=1\numteo=1\numlem=1
}

\def\newpar#1{
\vskip1.truecm
\vbox{
\\{\bf \numero\numsec.\numero\numpar. #1}
\parindex{\numero\numsec.\numero\numpar}{#1}
\*{}}
\nobreak
\advance\numpar by 1
}

\def\newpara#1{
\vskip1.truecm
\vbox{
\\{\bf A\numero\numsec.\numero\numpar. #1}
\paraindex{\numero\numsec.\numero\numpar}{#1}
\*{}}
\nobreak
\advance\numpar by 1
}

\def\newpre#1{
\vskip1.truecm
\vbox{
\\{\it #1}
\preindex{#1}
\*{}}
\nobreak
}

\else

\def\newsec#1{\vskip1.truecm
\advance\numsec by 1
\vbox{
\\{\bf \numero\numsec. #1}
\parindex{\numero\numsec}{#1}
\*{}}\numfor=1\pgn=1\numpar=1\numteo=1\numlem=1
\nobreak
}


\def\newsubsect#1{
\vskip1.truecm
\vbox{
\\{\it \numero\numsec.\numero\numpar. #1}
\parindex{\numero\numsec.\numero\numpar}{#1}
\*{}}
\nobreak
\advance\numpar by 1
}

\def\newapp#1{\vskip1.truecm
\advance\numsec by 1
\vbox{
\\{\bf A\numero\numsec. #1}
\appindex{A\numero\numsec}{#1}
\*{}}\numfor=1\pgn=1\numpar=1\numteo=1\numlem=1
}

\def\appendices{\numsec=0\def\Eq(##1){\Eqa(##1)}\def\eq(##1){\eqa(##1)}
\def\teq(##1){\teqa(##1)}}

\def\biblio{\vskip1.truecm
%\advance\numsec by 1
\vbox{
%\\{\bf \numero\numsec. 
\\{\bf References.}\*{}
\bibindex{{}}}\nobreak\makebiblio
}

\fi




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  GENERAZIONE INDICE  %%%%%%%%%%%%%%%%%%%%%%%%%%



\newread\indicein
\newwrite\indiceout

\def\faindice{
\openin\indicein=\jobname.ind
\ifeof\indicein\relax\else{
\ifnum\stile=1
  \pagenumbersind
  \pageno=-1
  \setind
  \null
  \vskip 2.truecm
  \\{\ftitolo Indice}
  \vskip 1.truecm
  \parskip = 0pt
  \input \jobname.ind
  \ppaginan
\else
\\{\bf Index}
\*{}
 \input \jobname.ind
\fi}\fi
\closein\indicein
%\newwrite\indiceout
\def\nomeindice{\jobname.ind}
\immediate\openout \indiceout = \nomeindice
}




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  BIBBLIOGRAFIA  %%%%%%%%%%%%%%%%%%%%%%%%%


\newwrite\bib
\immediate\openout\bib=\jobname.bib
\global\newcount\bibex
\bibex=0
\def\verabib{\number\bibex}

\ifnum\tipobib=0
\def\cita#1{\expandafter\ifx\csname c#1\endcsname\relax
\hbox{$\clubsuit$}#1\write16{Manca #1 !}%
\else\csname c#1\endcsname\fi}
\def\rife#1#2#3{\immediate\write\bib{\string\raf{#2}{#3}{#1}}
\immediate\write15{\string\C(#1){[#2]}}
\setbox199=\hbox{#2}\ifnum\maxit < \wd199 \maxit=\wd199\fi}
\else
\def\cita#1{%
\expandafter\ifx\csname d#1\endcsname\relax%
\expandafter\ifx\csname c#1\endcsname\relax%
\hbox{$\clubsuit$}#1\write16{Manca #1 !}%
\else\probib(ref. numero )(#1)%
\csname c#1\endcsname%
\fi\else\csname d#1\endcsname\fi}%
\def\rife#1#2#3{\immediate\write15{\string\Cp(#1){%
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\def\bE{{\bf E}}
\def\bv{{\bf v}}
\def\bq{{\bf q}}
\def\bV{{\bf V}}
\def\bQ{{\bf Q}}
\def\bR{{\bf R}}
\def\bTheta{{\Theta}}
\def\bJ{{\bf J}}
\def\bU{{\bf U}}
\def\bj{{\bf j}}
\def\bp{{\bf p}}
\def\bk{{\bf k}}
\def\bn{{\bf n}}

%\large\hsize=6.5truein\hoffset=-0.0in
%\draft{\#2: Numerical and analytical discussion}
\raggedbottom

\titolo{Properties of Stationary Nonequilibrium States in the Thermostatted Periodic Lorentz Gas II: The many point particles system}

\autore{F. Bonetto}{School of Mathematics, Institute for Advanced Study, Princeton, NJ 08540. Email: {\tt bonetto@ias.edu}}
\autore{D. Daems}{Center for Nonlinear Phenomena and Complex Systems, Universit\'e Libre de Bruxelles, 1050 Brussels, Belgium. \hfill\break Email: {\tt ddaems@ulb.ac.be}}
\autore{J.L. Lebowitz}{School of Mathematics, Institute for Advanced Study, Princeton, NJ 08540. Email: {\tt Lebowitz@math.rutgers.edu}}
\autore{V. Ricci}{Dipartimento di Matematica, 
Universit\`a ``La Sapienza'', Piazzale Aldo Moro n.5, 00185 Roma,
Italy. \hfill\break Email: {\tt Valeria.Ricci@roma1.infn.it} or {\tt ricci@mat.uniroma1.it}}

\abstract{We study the stationary nonequilibrium states 
of $N$ point particles moving under the influence of an electric field
${\bf E}$ among fixed obstacles (discs) in a two dimensional torus. The total
kinetic energy of the system
is kept constant through a Gaussian thermostat which
produces a velocity dependent mean field interaction between the
particles.  The current and the particle distribution functions are
obtained numerically and compared for small $|\bE|$ with analytic
solutions of a Boltzmann type equation obtained by treating the
collisions with the obstacles as random independent 
scatterings.  The agreement is
surprisingly good for both small and large $N$. The latter system in turn
agrees with a self consistent one particle evolution expected to 
hold in the $N\to\infty$ limit.}

\parole{Lorentz Gas, Gaussian Thermostat, Electrical Current, Steady state}

\prima

\newsec{Introduction}

In this note we continue our study of the stationary nonequilibrium
states (SNS) of current carrying thermostatted systems.  In part I 
\cita{BDL} we
described extensive numerical and analytical investigations of the
dependence of the current on the electric field for a model single
particle system introduced in \cita{MH} and previously studied in
\cita{CELS}.  Here we study a generalization of that model to
$N$ particles introduced in \cita{BGG}.  The particles, which have
unit mass, move among a fixed periodic array of discs in a two
dimensional square $\Lambda$ with periodic boundary 
conditions, see Fig. 1. They are acted on by an external
(electric) field $\bE$ parallel to the $x$-axis and by a ``Gaussian
thermostat''.  (The discs are located so that there is a finite
horizon, \ie there is a maximum distance a particle can move before
hitting a disc or obstacle).

\eqfig{600pt}{200pt}{
\ins{298pt}{24pt}{${\nota 2L}$}
\ins{296pt}{57pt}{${\nota \bv_1}$}
\ins{252pt}{94pt}{${\nota \bv_2}$}
\ins{335pt}{107pt}{${\nota \bv_3}$}
\ins{292pt}{193pt}{${\nota \bE}$}
\ins{250pt}{76pt}{${\nota R_2}$}
\ins{295pt}{120pt}{${\nota R_1}$}
}{x1}{General billiard structure with discs of radius $R_1$ and $R_2$
in a periodic box with side length $2L$, $N=3$ particles are shown.}  {fig1}
%
The equations of motion describing the time evolution of the positions
$\bq_i$ and velocities ${\bf v}_i, i=1,...,N$, are:

$$\left\{\eqalign{\dot\bq_i=&\bv_i\qquad
\bq_i=(q_{i,x},q_{i,y})\in\Lambda'\cr
\dot\bv_i=&\bE-\alpha(\bJ,U)\bv_i+F_{obs}(\bq_i)\cr}\right.\Eq(dyn1)$$
%
where

$$\alpha(\bJ,U)={\bJ\cdot\bE \over U},
\qquad\bJ={1\over N}\sum_{i=1}^N\bv_i, \qquad U={1\over
N}\sum_{i=1}^N\bv_i^2\Eq(dyn3)$$
%
Here $\Lambda'=\Lambda\backslash{\cal D}$, with ${\cal D}$ the region
occupied by the discs (obstacles) and $F_{obs}$ represents the elastic
scattering which takes place at the surface of the obstacles. The
purpose of the Gaussian thermostat, represented by the term
$\alpha(\bJ,U){\bf v}$ in eq.\equ(dyn1), is to maintain the total
kinetic energy $1/2\sum_{i=1}^N\bv_i^2$ constant, \ie $U=v_0^2$. It
also has the effect of making the flow $\Phi_t$ generated by
eq.\equ(dyn1) on the $(4N-1)$ dimensional energy surface non
Hamiltonian when ${\bf E}\not=0$. In fact the phase space volume
contraction rate is given by
$\sigma(X)=-(2N-1)\alpha(\bJ,U)$. Another effect of the thermostat
is to effectively couple all the particles in a mean field way,
$\alpha({\bf J},U)$, depending only on the total momentum of the
particles.  Note that this is the only coupling between the particles
in this system.
%A model in which there are also direct interactions
%between the particles is the subject of a separate investigation
%\cita{BGLR}.

The change of variables, $\bq_i\to\bq_i/L$, $\bv_i\to\bv_i/v_0$, $t\to
tv_0/L$ and $\bE\to\bE L/v_0^2$, where $2L$ is the length of the box,
leaves eq.\equ(dyn1) unchanged, so that the motion of the system takes
place on $\SS_N=(\Lambda')^N\times S_N$, where
$S_N=\{\bv_i|\sum_{i=1}^N\bv_i^2=N\}$. We shall denote by $X\in\SS_N$ a
point in the phase space of the system.  In these units we took $U=1$,
$R_1=0.39$, $R_2=0.79$, and $\Lambda$ is thetorus of 
side 2\annotano{See \cita{BDL} for an explanation of these values.}. 

Our main interest is in the SNS of this model system. To
be more precise let $\mu_0(dX,N)=\rho_0(X;N)dX$ be an initial measure
symmetric in the $\{\bq_i,\bv_i\}$ and absolutely continuous with
respect to the Liouville volume $dX$ projected on $\SS_N$.  The time
evolved measure $\mu_t(dX,\bE;N)$ is still absolutely continuous
with respect to the Liouville measure with  
density $\rho_t(X,\bE;N)$ for any fixed time $t$.
The SNS is expected to be
described by an SRB measure $\mu^+(dX,\bE;N)$, given by the weak limit,  
as $t\longrightarrow\infty$, of
$\mu_t(dX,\bE;N)$, when it exists. This limit measure is in general not 
absolutely
continuous with respect to the
Liouville measure, due to the phase space volume contraction \cita{Ru}, \cita{Ru3}. 
The existence of
such a limit was proven, for $N=1$ and
 $|\bE|\in[0,E_0]$
($E_0$ small)
in \cita{CELS}, but no such result is available for
$N\ge 2$, because of the lack of uniform
hyperbolicity for the zero field system.  On the other hand our
computer simulations of the dynamics, for $N$ ranging from 1 to 50 and
$E$ from $0.04$ to $1.0$, strongly support the belief that there exists
a unique limiting measure $\mu^+(dX,\bE;N)$ up to quite large values
of $|\bE|$, say $|\bE|=E \le 1$.  
%Due to the phase space volume
%contraction $\mu^+(dX,\bE;N)$ will be  
%singular with respect to the Liouville
%measure on $\cal S$ \cita{Ru}. 
We expect however that the projection of
$\mu^+(dX,\bE;N)$ on the one particle phase space
$\Lambda'\times\Omega_{(N)}$, where $\Omega_{(N)}$ is the ball
$|\bv|\le\sqrt{N}$, will yield a one particle density
$f^+(\bq,\bv,\bE;N)$ absolutely continuous with respect to 
$d\bq d\bv$; this is proven, for instance, for coupled Arnold's cat maps
\cita{BKL}). 

To obtain information about $f^+$ we considered first the case of weak
fields.  It is tempting to think that for $E\longrightarrow 0$ the
singular set on which $\mu^+$ is concentrated will be spread out more
or less uniformly on $\SS_N$ so that $\mu^+$ will approach weakly the
microcanonical measure on the energy surface $\SS_N$: this measure is
certainly invariant for the dynamics at $E=0$. If this were the case
then $f^+(\bq,\bv,\bE;N)$ would approach, as $E\to 0$, the equilibrium
one particle density obtained from the projection of the
microcanonical measure: for large $N$ this would be close to the
Maxwellian distribution with unit variance \annotano{Note that for 
large $N$ the Maxwell distribution is
typical for points on the energy surface, \ie the set $\BB$ on $\SS_N$
for which $f^+$ is not a Maxwellian has measure 0 (w.r.t. $dX$). Of
course since $\mu^{+}$ is singular w.r.t. $dX$ this need not to be the
case here.}. We ran computer
simulations for values of the field between $0.04$ and $0.12$ and
$N=2,5$ and 50. In all cases we found a one particle distribution that
is far from the projection of the microcanonical distribution.
Furthermore this distribution appeared to have only very slight
dependence on $E$ for those values of the field; so it appears that
there is a well defined limit of $f^+(\bq,\bv,\bE; N)$ as $E\to 0$,
and that this limit is {\it not} the projection of the microcanonical
measure: there are correlations between the velocities of the
particles induced by the field, beyond those corresponding to the
energy constraint, which remain when $E\longrightarrow 0$.

This deviation from the microcanonical distribution is reflected also
in the behavior of the average current per particle in the steady
state, given by $\bj(\bE,N)=\int\bv f^+(\bq,\bv,\bE;N)d\bq d\bv$ as
$E\to 0$. We studied $\bj(\bE,N)$ numerically as a function of $\bE$
and $N$, see Fig.\equ(fig2) and Fig.\equ(fig3). In the following we
will always assume that the electric field is along the positive
$x$-axis, $\bE=E{\bf 1}_x$. This implies that the $y$ component of
$\bj(\bE,N)$ is zero for symmetry reason. We will denote the $x$
component of the current by $j(E,N)$ and call $\k(E,N)=j(E,N)/E$ the
conductivity.  The dependence on $N$ for $E\to 0$ should be given by
the Green-Kubo formula for the zero field conductivity when the
dynamics of the particles are independent. A straightforward
computation then shows that the zero field conductivity of the $N$
particles is:

$$\k(0,N)=C_N(0)\k(0,1)\Eq(GK)$$
%
with $\k(0,1)$ given by the diffusion constant of Bunimovich and Sinai
\cita{BS} and

$$C_N(0)=\int {1\over |\bv|}f^+(\bq,\bv,0;N)d\bq d\bv\Eq(gk)$$
%
For the microcanonical distribution we easily find:

$$C_N(0)=\sqrt{\pi}\left(1-{3\over 8N}+O\left(N^{-2}\right)\right)\Eq(mic)$$
%
which is inconsistent with our data although the form of the
dependence on $N$ appear to be similar, see sect. 2.1.

Let us consider now the behavior of our model system in the limit
$N\to\infty$. As the particles interact only through their average
velocity $\bJ (X(t))$ it seems reasonable to expect that, for
$N\to\infty$, ${\bJ}$ will stop fluctuating,
\ie that 
for ``well behaved'' initial distributions \cita{BH}, \cita{Lan}, \cita{S}
$$
\bJ (X(t))\longrightarrow
{\bj}_t =\int \bv f_t(\bv,\bE)d\bv
\Eq(cur)
$$
where $f_t(\bv,\bE)=\lim_{N\longrightarrow\infty}
f_t(\bv,\bE;N)$.  If this were true in a sufficiently strong
sense it would lead to an autonomous Vlasov type equation
\cita{BH}, \cita{Lan}, \cita{S} for $f_t$ where $\dot{\bv}$ would be
computed self consistently from the (irreversible) dynamics
\annotano{The dynamics \equ(dyn1) is reversible in the sense that if
$T_t X$ is a solution then $T_t R T_t X=RX$, where $R$ reverses all
velocities.}

$${\dot \bv} = \bE - \lambda(t)\bv + {\bf F}_{obs}(\bq)\Eq(vi)$$
%
with $\lambda(t)=\bE\cdot{\bj}_{t}$.  The difficulty with proving this
behavior, as compared to the \cita{BH} case, is that trajectory
$X(t)$ and thus also $\bJ (X(t))$ is not smooth for finite $t$.  The
problems are compounded when we consider the $t\longrightarrow\infty$
limit corresponding to the SNS.

Based on numerical evidence we nevertheless believe that
$$\lim_{N\to\infty} f^+(\bv,\bE;N)=\hat f^+(\bv,\bE)\equiv \lim_{t\to\infty}\hat
f_t(\bv,\bE)\Eq(equv)$$
%
where $\hat f_t(\bv,\bE)$ is the solution of the Vlasov equation with
a force given by the right hand side of \equ(vi), and we define for a
given function $g$

$$g(\bv)=\int_{\Lambda'}g(\bq,\bv)d\bq \ .$$

The integration over $\bq$ is necessary, or at least desirable, since
we expect the $t\to\infty$ limit of $\hat f_t(\bq,\bv,\bE)$ to be
singular with respect to $d\bq d\bv$ as is the $N=1$ reversible system
\equ(dyn1). Its projection on the velocity is however expected to be
absolutely continuous with respect to $d\bv$ \cita{CELS}\cita{BKL}
. Eq\equ(equv) is thus a form of the law of large numbers which should
hold for smooth $\rho_0 (X,\bE;N)$.  Something like this was in fact
proven by Ruelle for the stationary state under some hypotheses on the
thermostatted dynamics \cita{Ru2}.
To make contact with Ruelle's theorem it is convenient to think of
$\Lambda_N$ as a torus of length $2LN$ along the $y$-axis
(perpendicular to $\bE$) and length $2L$ along the $x$-axis. This does
not change the dynamics.

To get some analytical handle on the form of the reduced distributions
in the SNS we investigated a model system in which the deterministic
collisions with the obstacles are replaced by a stochastic process in
which particle velocities get their orientations changed at random
times, independent for each particle.  This yields a Markov process
which replaces the continuity equation for $\rho_t(X,E;N)$ by a linear
Boltzmann-like equation, see \cita{VB1}.  We can write either of these 
equations in the symbolic form:

$${\partial\over \partial t}\rho_t(\bQ,\bV)+
\sum_i{\partial\over \partial \bq_i}\left\{\bv_i \rho_t(\bQ,\bV)\right\}+
\sum_i{\partial\over \partial \bv_i}\left\{\left[\bE-
\alpha(\bV)\bv_i\right] \rho_t(\bQ,\bV)\right\}=
\left({\partial \rho_t\over \partial t}\right)_{{\rm
coll}}, \Eq(bltz)$$
%
where we have set $X = ({\bf Q},{\bf V})$ (and dropped the explicit
dependence on $\bf E$ and $N$). The term on the right hand
$\left({\partial \rho_t\over\partial t}\right)_{{\rm coll}}$
represents either the effect of deterministic collisions with the
obstacles as given by \equ(dyn1) or a collision operator independent
of $\bQ$, see \equ(coll).  A similar ansatz for the irreversible
dynamics \equ(vi) leads to a Boltzmann-Vlasov equation for the one
particle distribution.  These equations can be solved analytically as
a power series in $E$ and/or numerically.  This is described in
sect. 3.

In sect. 4 we compare some of the moments, including the current, of
the deterministic distribution $f^{+}(\bv,\bE;N)$ with those of the
stochastic one.  We find surprisingly good agreement once the mean
free path appearing in the Boltzmann-like equations is properly
interpreted, see sec. 4.2. We note however that a direct computation
of the distribution of free paths in the dynamical system \equ(dyn1)
shows that it is far from being exponential, which is the basic
assumption of the Markov process. We therefore have no real
explanation for the observed good agreement.  We only note that some
features of the stationary state appear rather robust with respect to
the collision processes with the ``obstacles'', yielding similar
results for different distributions for the free path. In sect. 5 we
discuss some general questions about the relation between this
thermostatted model and the Drude model of electrical conduction in
metals \cita{DR}.

\newsec{Numerical results} 

Eq. \equ(dyn1) can be solved in terms of quadratures between
collisions with the obstacles so the simulation consists mainly in
computing the times of successive collisions. At each collision there
is an instantaneous change in the velocity of the colliding particle
and consequently also in the current $\bJ$ and thus in the
thermostatted force acting on each particle. Assuming that the system
is ergodic we can obtain information about the SNS from time averages
over a single trajectory. In practice we used a few initial states and
found a behavior consistent with this assumption. The relative
simplicity of the dynamics enabled us to get fairly accurate results
even for 50 particles with relatively small computing power. Our
simulation were carried out on a Pentium PC. Error bars are computed
by doubling the range of the fluctuations of the time average over the
interval $[0.9T,T]$ where $T$ is the total number of collisions
computed. After the change of variables described after \equ(dyn3) all 
quantities appearing in the graphs are adimensional. 

\newsubsect{The current}

Let $\bj(\bE,N)$ be the average current in the steady state $\mu^{+}$,

$$\bj(\bE,N)=\langle \bJ \rangle_{\mu^+}= 
\int\bv f^+(\bv,\bE, N)d\bv\ .\Eq(j)$$
%
with $\bJ$ defined in \equ(dyn3).  As already noted, in all our
computations the electric field is along the positive $x$-axis, ${\bf
E}=E {\bf 1_x}$, all densities are normalized and $j(E,N)$ is the
$x$-component of the current defined in eq.\equ(j).

\gnuins fig2 fig2 {Conductivity $\k(E,N)$ as a function of $E$ for 
different $N$.}

In Fig.\equ(fig2) we plot the conductivity $\kappa(E,N)=j(E,N)/E$ as a
function of the field for different numbers of particles,
$N$=1,2,10,15,20,30 and 50. The averages were computed by running
simulations in which the total number of collisions with the obstacles
varied from $10^9$ for $N=1$ to $10^8$ for $N=50$.

\gnuins fig3 fig3 {$\k(E,N)$ as a function of $N^{-1}$ for 
different $E$. Also plotted is the conductivity obtained from
eq.\equ(GK) using the actual distribution function, see next section, for 
$E=0.04$ and compared with the value obtained by a direct simulation 
at the same field. Finally the highest line represents the conductivity 
obtained from eq.\equ(GK) using a microcanonical hypothesis.}

We note that for very small fields the interaction
among the particles is very small so that the invariant distribution
is reached only after a very long transient time.

Furthermore, although the current goes to 0 as $E\to 0$, the
fluctuations in the current are almost independent of $E$ so that
longer and longer simulations are required in order to distinguish the
average from the fluctuations when $E\to 0$. For
$N=2,5$ and $10$ we checked whether ${d \k(E,N)\over dE}\to 0$ as $E\to
0$, as required by the symmetry of the problem if $\k(E,N)$ is
differentiable at 0. While the results are not definitive they are
consistent with such behavior.

In Fig. \equ(fig3) we plot the conductivity as a function of $1/N$ for
a few selected values of the field. As can be seen there the behavior
of $\kappa(E,N)$ can be well fitted for $N>2$ by the following formula
which is the analogous of eq. \equ(GK) with $C_N(0)$ given by
\equ(mic) for $E \neq 0$:
$\kappa(E,N)=\tilde\kappa(E)+c/N$ with
$\tilde\kappa(E)=\lim_{N\to\infty} \kappa(E,N)$ and $c$ independent
from $E$, at least within the accuracy of our computation. (The value
of $\k(E,1)$ is about 15-20\% lower than that given by the
formula, depending on $E$).  For $E=0.04$ we have the value of the
conductivity for $N=2,5$ and 50 as well as the distribution
$f^+(\bv,E;N)$. We can therefore check directly
eq.\equ(gk) for $E \neq 0$. Fig. \equ(fig3) contains both the values obtained
directly and those obtained from eq.\equ(gk) for $E=0.04$. The agreement is clearly
very good. Finally plotted in Fig.\equ(fig3) is the value of the
conductivity at zero field obtained from eq.\equ(mic), \ie assuming
that the invariant distribution is microcanonical. Although this
assumption is inconsistent with the actual numerical
data, the behavior is qualitatively similar.

The smoothness, or rather the lack of smoothness, of the current as a
function of $E$ for $N=1$ was extensively discussed in \cita{BDL} and
related there to the discontinuities of the collision map. The data we
have for $N \ge 2$ are insufficient to address this question.  However
it is expected that the stationary current will be smoother than it is
in the one particle case, since it is averaged over all particles.

\newsubsect{Distribution functions}

To study the space independent part of the one particle density
function, $f^+(\bv,E;N)$, it is convenient to switch to the variables
$r=\vert \bv\vert
\in [0,\sqrt{N}]$ and $\theta \in [-\pi,\pi]$ the angle between the
velocity ${\bf v}$ and the $x$-axis.  Expanding $f^{+}(\bv,E,N)$ in a
Fourier series in $\theta$, we have
 
$$f^{+}(\bv,E;N)= \sum_{k=0}^{\infty}\psi_k(r,E;N) \cos k\theta \
, \Eq(esp)$$  
%
where only terms in $\cos k\theta$ appear due to the symmetry of the
problem. Note that $2\pi r\psi_0(r,E;N)$ 
is the stationary probability density
for
the modulus of $\bv$ while

$$j(E,N)=\pi\int_0^{\sqrt{N}}dr\, r^2 \psi_1(r,E;N) \ .\Eq(Kn) $$ 
%
\gnuins fig5 fig5 {Plot of $2\pi r\psi_0(r,E;2)$  for 
different values of $E$. The straight dashed line is obtained from the
microcanonical distribution, Eq.\equ(mc). The dotted line gives the
result for the stochastic model}
\gnuins fig6 fig6 {Plot of $\pi r\psi_1(r,E;2)/E$
for different values of $E$. The dotted line gives the result for the
stochastic model}

In Fig. \equ(fig5) we plot {\bf $2\pi r\psi_0(r,E;2)$}
for $E=0.04,0.08,0.12$ while Fig. \equ(fig6) is a plot of
$\pi r\psi_1(r,E;2)/E$ for the same values of the field. Both appear to
be almost independent of $E$ for those values of $E$ so we believe that
Figs. \equ(fig5) and \equ(fig6) represent a good approximation for the
limiting behavior $E\to 0$. Observe that, due to the symmetry $E\to
-E$ we expect the corrections to these functions to be of $O(E^2)$.
For comparison we also plotted there the results obtained analytically
from the stochastic model discussed in the Introduction and in section
3.

In Fig. \equ(fig5) we also plot the
`` microcanonical'' density of $|\bv_1|$ obtained from the
microcanonical ensemble of 2 particles with $\bv_1^2+\bv_2^2=2$. 
The microcanonical one particle density $f_{\rm micro}(\bv)$
is of course isotropic and the speed distribution,
 $2\pi|\bv_1|f_m (|\bv_1|,E=0;2)$, is

$$2\pi|\bv_1| f_m(|\bv_1|,E=0;2)={1\over \pi}|\bv_1| 
\int\delta(\bv_1^2+\bv_2^2-2)d\bv_2= |\bv_1|\ {\cal H}(2 - \bv_1^2) \
,\Eq(mc)$$
%
where ${\cal H}(x)$ is the Heaviside function.  This is seen to be
very different from what we obtain from our simulations or
analytically from the stochastic model for $E\to 0$.  We did a similar
analysis for $N>2$ and in Figs. \equ(fig7) and
\equ(fig8) we present the corresponding results for $N=50$.

\gnuins fig7 fig7 {Plot of $2\pi r\psi_0(r,E;50)$ 
for $E=0.04$. Also shown are the results from simulations of \equ(vi)
and from analytic solutions of the corresponding stochastic equation,
Eq.\equ(sol2). For comparison we also show the microcanonical result,
corresponding to a Maxwellian.}

\gnuins fig8 fig8 {Plot of $\pi r\psi_1(r,E;50)/ E$ and comparison
with stochastic irreversible dynamics for $E=0.08$} 

\newsubsect{The $N=\infty$ limit}

As discussed in sec. 2.1, $\k(E,N)\to\tilde\k(E)$ as $N\to\i$. We
compared the $\tilde\k(E)$ obtained from our simulation, see
Fig. \equ(fig3), with that obtained from the irreversible
eq.\equ(vi). A way to do this self-consistently would be to choose the
parameter $\lambda$ in eq.\equ(vi) such that

$$\hat U(E)=\int d\bv |\bv|^2 \hat f^+(\bv,E)=1$$
%
and show that for this value of $\lambda$ the conductivity $\hat
\k(E)$ for the system described by eq.\equ(vi) is equal to $\tilde
\k(E)$.  Rather than doing this, we took the $\tilde\k(E)$ deduced
from the simulations as in Fig.\equ(fig3) and used it to determine
$\lambda$, i.e. we set $\lambda=\tilde \k(E)E^2$ in eq.\equ(vi). We
then computed, via simulation of eq.\equ(vi), a new conductivity $\hat
\k(E)$.  In Fig.\equ(fig_fit) we compare $\hat \k(E)$ and
$\tilde\k(E)$. The agreement is very good. We observe that it follows
from eq.\equ(vi)that $E^2 \hat\k(E)/\hat U(E)=\lambda$ so that this
agreement also confirms the self-consistency discussed above.

\gnuins fig_fit fig_fit {Comparison between the limiting value of the
conductivity $\tilde \k(E)$ in the reversible model and in the
irreversible model $\k_\infty(E)$.}

As for the reversible dynamics we can write 

$$\hat f^+(\bv,E)= \sum_{k=0}^{\infty}\phi_k(r,E) \cos k\theta\Eq(espi)$$

In Figs. \equ(fig7) and \equ(fig8) we compare $2\pi r\psi_0(r,E;50)$ and
$\pi r \psi_1(r,E;50)$ with $2\pi r\phi_0(r,E)$ and $\pi r \phi_1(r,E)$
respectively. The agreement is very good.  As we did for $N=2$ in
Fig. \equ(fig5) and Fig. \equ(fig6) we also plotted in
Figs. \equ(fig7) and \equ(fig8) the results obtained analytically from
the stochastic model discussed in the Introduction and in section
3. In Fig. \equ(fig7) we also plot the microcanonical density, \ie a
Maxwellian with $<\bv_1^2>=1$.


\newsec{Thermostatted Stochastic Evolution}

We now describe more precisely the stochastic model system in which
the collisions between particles and obstacles are replaced by
independent random scattering events. The model is specified by
writing the right hand side of eq. \equ(bltz), the evolution equation
for the $N$-particle phase space density of our system, which we now
call $F_t(\bQ,\bV)$, to distinguish it from the mechanical
$\rho_t(\bQ,\bV)$, as

{\bf $$\left({\partial F(\bQ,\bV,\bE)\over \partial t}\right)_{\rm coll}=
l^{-1}\sum_{i=1}^N\int_{(\bn\cdot \bv_i)<0} {(\bv'_i\cdot \bn)\over 2}
\left(F(\bQ,\bV_i',\bE)-F(\bQ,\bV,\bE)\right)d\bn\Eq(coll)$$} 
%
In \equ(coll) $\bn$ is a unit vector in the direction of the momentum
transfer in a ``collision'', $\vert \bn\vert=1$,
$\bv'=\bv-2\bn(\bn\cdot\bv_i)$ and $\bV_i'$ is identical to $\bV_i$
except for its $i$-th component which is replaced by $\bv'_i$. The
coefficient $l^{-1}$ multiplying the collision term is the inverse of
the mean free path between collisions, a parameter to be specified.

Eq. \equ(bltz) together with \equ(coll) describes 
a Markov process in which particles change the
directions of their velocities as if they were undergoing independent
random collisions with ``phantom obstacles'' at a rate equal to
$l^{-1}|\bv|$ with a uniformly distributed impact parameter \cita{IP}.
Between collisions the particles move according to eq.\equ(dyn1).
This model can be thought of as, and presumably even proven to be, the
Boltzmann-Grad limit of our system: \ie, we place discs of radius $R$
randomly in a square of side $L$ with density $\rho$ and then take
$R\to 0$, $\rho\to\i$ such that $l={1\over 2\rho R}$ stays
constant, see \cita{B-G}.

This system will, like our mechanical system, eq.\equ(dyn1), conserve
energy, so setting $\sum\bv_i^2=N$ the evolution takes place on
$\SS_N$. By general arguments \cita{GLP}, \cita{GLP2} we expect that
this system will, for $E\not=0$ approach, as $t\to\infty$, a unique
stationary density $F(\bV,\bE;N)$ which will satisfy the equation

$$\sum_{i=1}^{N}{\partial\over \partial
\bv_i}\left\{\left[\bE-\bE\cdot\bJ\bv_i\right] F(\bV,\bE;N)\right\}=
\left({\partial F(\bV,\bE;N)\over \partial t}\right)_{{\rm coll}} \Eq(blN)$$

For small $E$ we expand $F(\bV,\bE;N)$ as  a formal power series in $\bE$:
{\bf $$F(\bV,\bE;N)=F(\bR,\Theta)=\sum_{n=0}^{\infty}E^n F^{(n)}(\bR,
\bTheta) \Eq(sam)$$} 
%
where we have set $\bv_i=(r_i \cos \theta_i,r_i \sin \theta_i)$ and
$\bR =(r_1,\ldots, r_N)$, $\sum_i r_i^2=N$, $\bTheta =(\theta_1,
\ldots,\theta_N)$. Observe that in this way we get a singular perturbation
problem because $E$ multiplies the highest order derivative in
eq.\equ(blN).  Moreover $F^{+}(\bV,\bE;N)$ clearly depends only on $E/l$
so that we can, for the time being, set $l=1$.  Finally we can write,
as in the previous section,

$$F^{(n)}(\bR,\bTheta)=\sum_{\bk\in \zzz^N_+}
F^{(n)}(\bR,\bk)\prod_{i=1}^N\cos(k_i\theta_i)
\Eq(fou1)$$
%
where we have again used the symmetries of the problem.

Substituting \equ(fou1) into \equ(sam) one gets a hierarchy of
equations linking $F^{(n)}(\bR,\bk)$ to $F^{(n-1)}(\bR,\bk^i)$ where
$\bk^i=(k_1,\ldots,k_i+1,\ldots,k_N)$. From this, and from the fact
that the kernel of the collision operator depends only on $\bR$ we get
that $F^{(n)}(\bR,\bk)=0$ if $|\bk|>n$.  $F^{(0)}(\bR, 0)$ satisfies
the relation:

$${\partial\over \partial {r_i}}F^{(0)}(\bR,0)={4\over 3}{r_i}
F^{(1)}(\bR,0^i)\Eq(1or)$$ 
%
while for $F^{(1)}(\bR,0^i)$ we get the equation

$$\sum_i\left\{\left(-{r_i\over U}-{1\over
r_i}\right)F^{(1)}(\bR,0^i)+{\partial\over
\partial {r_i}}F^{(1)}(\bR,0^i)\right\}=0 \Eq(2or)$$
%
with $U=\sum_i r_i^2$. Equations \equ(1or) and \equ(2or) are easily
solved and, together with the fact that $F^{(1)}(\bR,0)\equiv 0$ give
us $F(\bR,\Theta)$ to first order in $E$

$$F(\bR, \bTheta)=C\delta(\sum_{i=1}^Nr_i^2-N)\left[{1\over \left(\sum_i
r_i^3\right)^{{2N-1\over 3}}}+{3(2N-1)E\over 4}
{r_i\cos\theta_i\over \left(\sum_i
r_i^3\right)^{{2N+2\over 3}}} +O(E^2)\right]\Eq(sol1)$$
%
where C is a normalization constant.  It is possible to write out the
full hierarchy of equations for $F^{(n)}(\bR,\bk)$ and see that they
can be solved iteratively but it is not clear that this is useful. We
shall therefore use eq.\equ(sol1) to compare with our numerical data
for small values of $E$. To do so we define the one particle
distribution $\tilde{f}(\bv,E;N)$ and develop it in a Fourier series
exactly as in eq.\equ(esp):

$$\tilde f(\bv,E;N)=\int d\bv_2\cdots d\bv_N\tilde
F(\bV,E;N)=\sum_{k=0}^\i \tilde \psi_k(r,E;N)cos (k_i\theta_i)\Eq(proj)$$
%

Before doing any comparisons we consider the stochastic version of the
$f_i(\bv,E)$ obtained from the irreversible dynamics defined by
eq.\equ(vi). Putting $\lambda=E^2\nu$, $\nu$
%%%
to be set to $\bar{\k}(E)$
when compared with the deterministic model, we get

$${\partial\over \partial
\bv}\left\{\left[\bE-E^2\nu\bv\right]\tilde f_i(\bv,\bE)\right\}=
\left({\partial \tilde f_i(\bv,\bE)\over \partial t}\right)_{{\rm
coll}} \Eq(bltz2)$$
%
where the collision term is again given by eq.\equ(coll) with $N=1$. 
Observe that
although eq.\equ(bltz2) contains three parameter ($E$, $\nu$ and $l$)
it depends only on $El$ and $\nu l^{-1}$.  Developing $\tilde
f_i(\bv,\bE)$ in a power series in $E$ we obtain in analogy to
\equ(sol1)

$$\tilde{f}_i(\bv,\bE)= C e^{-\frac{8}{9l}\nu r^3} (1+ 2\nu E r
\cos\theta)+O(E^2)\Eq(sol2)$$
%
where $C$ is a normalization constant. 

To compare $\tilde{f}_i (\bv,\bE)$ with the large $N$ limit of
$\tilde{f}(\bv,\bE;N)$ given in \equ(proj) and \equ(bltz2) we need to
fix the parameter $\nu$ (setting $l=1$).  This can be done
self-consistently requiring that:

$$\int|\bv|^2\tilde f_i(\bv,\bE)d\bv=1\Eq(self)$$
%
Solving eq.\equ(self) for $\nu$ and using it to compute $\tilde f_i$
we expect that:

$$\lim_{N\to\i}\tilde  f(\bv,E;N)=\tilde f_{i}(\bv,E)\Eq(equi)$$
%
While we have not proven this equivalence we believe that it should
follow from general considerations: it would follow formally from
showing that, in the limit $N\to\i$, $\tilde{F}(\bv,\bE;N)$
factorizes, as is usually the case for systems with mean field type
interactions. This is certainly consistent with our numerical results.


\newsec{Comparison between the deterministic and stochastic time evolution}
\newsubsect{The distribution of the modulus of $\bv$}

For $N=1$ the exact solution, for $E=0$, of both the stochastic and
mechanical models is $f(\bv,0;1)=\delta(\bv^2-1)$.  For $N=2$, we are able
to compute the one particle distribution from eq.\equ(sol1). This
yields

$$r\tilde\psi_0(r,E;2)={Cr\over r^3+(2-r^2)^{3/2}}+O(E^2)\Eq(dist2)$$
%
where $C$ is a normalization constant. This is plotted in {\bf
F}ig. \equ(fig5) and one can easily see that the agreement with the
numerical solution of the deterministic model is very good.

A similar agreement is obtained for $N=5$ although, as already said we
were not able to integrate eq.\equ(proj) for $N>2$ so that we computed this
integral numerically by simulating the process associated to eq.\equ(bltz) 
with collision term given by eq.\equ(coll).

Finally for $N=50$ we see in  Fig. \equ(fig7) that our deterministic
\equ(dyn1), stochastic \equ(bltz2) and irreversible \equ(vi) models 
give indistinguishable results. This certainly suggests the
validity of \equ(vi) and \equ(equi) for large $N$.

\newsubsect{The first Fourier component of the distribution of $\bv$}

The analysis of the first Fourier component of the distribution of
$\bv$ is less straightforward because we must fit the parameter $l$
appearing in eq.\equ(coll). In the stochastic system $l$ represent the
mean free flight of a particle. The concept of mean free flight is not
uniquely defined for the mechanical model.  For this reason we used
$l$ as a fitting parameter for matching $\tilde{\psi}_1(r,E;N)$ with
$\psi_1(r,E;N)$. We will go back to the mechanical meaning of this
parameter in the following section. The case $N=2$ is reported in
Fig.\equ(fig6) where, for the periodic case, we used a field $E=0.04$
and for the stochastic one we have the expression

$$r\tilde\psi_1(r,E;2)=
{1\over 2}{9El\over 4}{Cr^2\over \left(r^3+(2-r^2)^{3/2}\right)^2}+O(E^3)
\Eq(dist3)$$
%
with $C$ the same costant appearing in eq.\equ(dist2) The agreement is
again very good and we obtain from the fit $l=0.46$ (in the unit
discussed in the introduction). As in the previous case we did the
same comparison for 5 particles, obtaining again a very good
agreement. Moreover also in this case the value of $l$ is very close
to that obtained for $N=2$.  Finally it is interesting to check if
this agreement remains when $N\to\infty$, \ie for the stochastic
irreversible equation \equ(bltz2). As can be seen from Fig.\equ(fig8)
the agreement is again very good and we still get the same value for
the parameter $l\simeq 0.46$.

We were also able to compute $\psi_k(r,E;2)$ and $\phi_k(r,E)$ for
$k=2$ and $3$. It is also easy to compute the lowest order
contribution to $\tilde\psi_k(r,E;2)$ and $\tilde\phi_k(r,E)$,
extending the computation from section 3. It is thus possible to
compare, at least in this limited situation, the results.  Contrary to
what we found for $k=0$ and 1, $\psi_2(r,E;2)$ is quite different from
$\tilde\psi_2(r,E;2)$. Analogously $\phi_2(r,E)$ and
$\tilde\phi_2(r,E)$ differ significantly. A comparison of the term
with $k=3$ also shows deviations between the mechanical and the
stochastic models although, surprisingly, much smaller than those
found for $k=2$. We note however that for this comparison we only have
data for $E=0.012$.

\newsubsect{The mean free flight.}

In kinetic theory one can define the mean free flight in two ways. Denoting by
$\ell_i(X)$ the distance travelled by particle $i$ before its first
collision with an obstacle starting form the point $X\in\SS_N$,
$l_0$ is the average of $\ell_i(X)$ with respect to the SRB
distribution $\mu^+(dX,\bE;N)$ (it clearly does not depend on $i$). On
the other hand we can consider the set $\SS^i_N$ of points such
that particle $i$ is undergoing a collision, \ie $\bq_i$ is on the
boundary of one of the scatterers, then $l_1$ is the average of
$\ell_i(X)$ on $\SS^i_N$ with respect to the projection of the SRB
distribution $\mu^+(dX,\bE;N)$. Observe that for the stochastic model
these two quantities are identical.  

We computed both $l_0$ and $l_1$ for the mechanical system with
$N=2,5,50$ and for the irreversible dynamics eq.\equ(vi) with
$E=0.04$. This was done by running a very long trajectory and taking
the average of the distance travelled by a particle between two
collisions to compute $l_1$ or numerically integrating $\ell_i(X)$
along the trajectory to compute $l_0$. The results appears to be
independent of $N$, at least within the accuracy of our
computations, and are:

$$\eqalign{l_0&=0.46\cr l_1&=0.58}$$

The value of $l_0$ agrees very well with the value obtained from the
fit of $l$ reported in the previous section. This implies that the
correct way to compare the stochastic and the mechanical model is to
use $l_0$ as the mean free flight parameter in eq.\equ(coll).
This is consistent with the Green-Kubo formula eq.\equ(GK). We
saw in sect. 2.1 that eq.\equ(GK) is well verified for the
conductivity at small field of the deterministic model. In the case of
the stochastic model eq.\equ(GK) reduces to an integral relation
between $F^{(0)}(\bR,0)$ and $F^{(0)}(\bR,0^i)$, see
eq.\equ(1or)\equ(2or) in sect. 3. We did not prove this identity although
numerical analysis for small $N$ seems to verify it. Finally the
agreement between $\psi_0(r,0;N)$ and $\tilde\psi_0(r,0;N)$ observed
in sect.4.1 tells us that the ratio between the conductivity for the
deterministic and stochastic dynamics is independent of $N$ at least
for $E\to 0$. From eq.\equ(sol1) we know that the conductivity for the
stochastic model with one particle and $E=0$ is $3l/4$ so that also
for the deterministic model we have

$$\k(0,1)={3\over 4}l_0\Eq(agr)$$
%
This relation is also very well verified by our computation for the 1
particle system. 

To better compare the deterministic and stochastic models we also
computed the distribution $P(\ell,\bE;N)$ of $\ell_i(X)$ with respect
to the SRB distribution.  This distribution for 5 particles and
$E=0.04$ is shown in Fig.\equ(fig13) together with an exponential law
with the same average, \ie the distribution one would obtain running
the same simulation for the stochastic case. We did similar
computation for $E=0.04$ and $N=2,10$ and $50$. The results are again
independent from $N$.

\gnuins fig13 fig13 {Free path distribution $P(l,0.04;5)$ compared with
an exponential distribution with the same average}

\newsec{Conclusions}

To put our study here in a physical context we note that a system of
noninteracting electrons moving under the influence of an external
electric field while undergoing elastic scatterings is often
used as a crude model of electrical conduction in metals (the Drude
model) \cita{AM},\cita{K},\cita{DR}. To obtain the conductivity the velocity
distribution function of the electrons is then computed from a
Boltzmann type equation like eq.\equ(blN): with $N=1$ and {\it
without} the thermostatting $\bE\cdot\bJ$ term. By doing this
calculation only to linear order in $E$ one avoids the problem that,
without the thermostat eq.\equ(blN) does not have a solution since the
system will never be in a true steady state \cita{PW}. A crucial
ingredient in the calculation is the explicit assumption that for
$E=0$ the distribution is one corresponding to equilibrium at a given
specified temperature $T$, \ie Maxwellian for a classical system. 

This description of the system of
independent electrons interacting with the lattice of ions only via
elastic collision is clearly not realistic. It is just used for
obtaining a simple quick answer for the zero (small) field
conductivity.
For a more complete description of the steady state in a conductor one
has to consider the system to be in contact with some {\it reservoir}
which will absorb the heat generated by the current. It is this
interaction with some external reservoir that was replaced, in the
model considered here, by an artificial thermostat. To our surprise
however we found that  this modeling does not lead to a Maxwellian
distribution when $E\to 0$ even when $N$ is very large. This means
that there is no {\it equivalence of ensembles} when it comes to
modeling how the energy is extracted from the system- at least when
there is no direct interactions between the particles other than that
induced by the thermostat. We expect (and have some indication
\cita{Ga}) that this will change when we include collisions between
the particles. Still it raises some caution about ``thermostats'' as a
model for the description of stationary nonequilibrium states.

\medskip
\0{\bf Acknowledgment.} We are indebted to G. Gallavotti, 
P.L. Garrido, S. Goldstein, A. Rohlenko,  D. Ruelle and particularly H. van Beijeren
for many helpful discussions and suggestions.
Much of the research was carried out at Rutgers University where it was supported in
part by NSF Grant DMR-9813268, and Air Force Grant F49620-98-1-0207. 
D. D. is Charg\'e de recherches at the FNRS.
V. R. was supported by the Foundation BLANCEFLOR Boncompagni-Ludovisi n\'ee Bildt.


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\biblio
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1577 3221 Pls
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1661 2883 Pls
1682 2805 Pls
1703 2732 Pls
1724 2661 Pls
1745 2593 Pls
1766 2529 Pls
1788 2464 Pls
1809 2405 Pls
1830 2345 Pls
1851 2289 Pls
1872 2236 Pls
1893 2180 Pls
1914 2131 Pls
1935 2082 Pls
1956 2034 Pls
1977 1988 Pls
1999 1946 Pls
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2041 1860 Pls
2062 1823 Pls
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2104 1747 Pls
2125 1712 Pls
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2167 1643 Pls
2188 1612 Pls
2210 1581 Pls
2231 1550 Pls
2252 1523 Pls
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2315 1441 Pls
2336 1417 Pls
2357 1392 Pls
2378 1368 Pls
2399 1346 Pls
2421 1324 Pls
2442 1303 Pls
2463 1283 Pls
2484 1262 Pls
2505 1244 Pls
2526 1226 Pls
2547 1208 Pls
2568 1192 Pls
2589 1175 Pls
2610 1160 Pls
2632 1146 Pls
2653 1132 Pls
2674 1119 Pls
2695 1104 Pls
2716 1093 Pls
2737 1081 Pls
2758 1068 Pls
2779 1059 Pls
2800 1048 Pls
2821 1038 Pls
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2885 1015 Pls
2906 1008 Pls
2927 1004 Pls
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2990 991 Pls
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/LT3 { PL [1 dl 1.5 dl] 1 0 1 DL } def
/LT4 { PL [5 dl 2 dl 1 dl 2 dl] 0 1 1 DL } def
/LT5 { PL [4 dl 3 dl 1 dl 3 dl] 1 1 0 DL } def
/LT6 { PL [2 dl 2 dl 2 dl 4 dl] 0 0 0 DL } def
/LT7 { PL [2 dl 2 dl 2 dl 2 dl 2 dl 4 dl] 1 0.3 0 DL } def
/LT8 { PL [2 dl 2 dl 2 dl 2 dl 2 dl 2 dl 2 dl 4 dl] 0.5 0.5 0.5 DL } def
/Pnt { stroke [] 0 setdash
   gsave 1 setlinecap M 0 0 V stroke grestore } def
/Dia { stroke [] 0 setdash 2 copy vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V closepath stroke
  Pnt } def
/Pls { stroke [] 0 setdash vpt sub M 0 vpt2 V
  currentpoint stroke M
  hpt neg vpt neg R hpt2 0 V stroke
  } def
/Box { stroke [] 0 setdash 2 copy exch hpt sub exch vpt add M
  0 vpt2 neg V hpt2 0 V 0 vpt2 V
  hpt2 neg 0 V closepath stroke
  Pnt } def
/Crs { stroke [] 0 setdash exch hpt sub exch vpt add M
  hpt2 vpt2 neg V currentpoint stroke M
  hpt2 neg 0 R hpt2 vpt2 V stroke } def
/TriU { stroke [] 0 setdash 2 copy vpt 1.12 mul add M
  hpt neg vpt -1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V closepath stroke
  Pnt  } def
/Star { 2 copy Pls Crs } def
/BoxF { stroke [] 0 setdash exch hpt sub exch vpt add M
  0 vpt2 neg V  hpt2 0 V  0 vpt2 V
  hpt2 neg 0 V  closepath fill } def
/TriUF { stroke [] 0 setdash vpt 1.12 mul add M
  hpt neg vpt -1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V closepath fill } def
/TriD { stroke [] 0 setdash 2 copy vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V closepath stroke
  Pnt  } def
/TriDF { stroke [] 0 setdash vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V closepath fill} def
/DiaF { stroke [] 0 setdash vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V closepath fill } def
/Pent { stroke [] 0 setdash 2 copy gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  closepath stroke grestore Pnt } def
/PentF { stroke [] 0 setdash gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  closepath fill grestore } def
/Circle { stroke [] 0 setdash 2 copy
  hpt 0 360 arc stroke Pnt } def
/CircleF { stroke [] 0 setdash hpt 0 360 arc fill } def
/C0 { BL [] 0 setdash 2 copy moveto vpt 90 450  arc } bind def
/C1 { BL [] 0 setdash 2 copy        moveto
       2 copy  vpt 0 90 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C2 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 90 180 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C3 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 0 180 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C4 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 180 270 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C5 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 0 90 arc
       2 copy moveto
       2 copy  vpt 180 270 arc closepath fill
               vpt 0 360 arc } bind def
/C6 { BL [] 0 setdash 2 copy moveto
      2 copy  vpt 90 270 arc closepath fill
              vpt 0 360 arc closepath } bind def
/C7 { BL [] 0 setdash 2 copy moveto
      2 copy  vpt 0 270 arc closepath fill
              vpt 0 360 arc closepath } bind def
/C8 { BL [] 0 setdash 2 copy moveto
      2 copy vpt 270 360 arc closepath fill
              vpt 0 360 arc closepath } bind def
/C9 { BL [] 0 setdash 2 copy moveto
      2 copy  vpt 270 450 arc closepath fill
              vpt 0 360 arc closepath } bind def
/C10 { BL [] 0 setdash 2 copy 2 copy moveto vpt 270 360 arc closepath fill
       2 copy moveto
       2 copy vpt 90 180 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C11 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 0 180 arc closepath fill
       2 copy moveto
       2 copy  vpt 270 360 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C12 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 180 360 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C13 { BL [] 0 setdash  2 copy moveto
       2 copy  vpt 0 90 arc closepath fill
       2 copy moveto
       2 copy  vpt 180 360 arc closepath fill
               vpt 0 360 arc closepath } bind def
/C14 { BL [] 0 setdash 2 copy moveto
       2 copy  vpt 90 360 arc closepath fill
               vpt 0 360 arc } bind def
/C15 { BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill
               vpt 0 360 arc closepath } bind def
/Rec   { newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto
       neg 0 rlineto closepath } bind def
/Square { dup Rec } bind def
/Bsquare { vpt sub exch vpt sub exch vpt2 Square } bind def
/S0 { BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare } bind def
/S1 { BL [] 0 setdash 2 copy vpt Square fill Bsquare } bind def
/S2 { BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare } bind def
/S3 { BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare } bind def
/S4 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare } bind def
/S5 { BL [] 0 setdash 2 copy 2 copy vpt Square fill
       exch vpt sub exch vpt sub vpt Square fill Bsquare } bind def
/S6 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare } bind def
/S7 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill
       2 copy vpt Square fill
       Bsquare } bind def
/S8 { BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare } bind def
/S9 { BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare } bind def
/S10 { BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill
       Bsquare } bind def
/S11 { BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill
       Bsquare } bind def
/S12 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare } bind def
/S13 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill
       2 copy vpt Square fill Bsquare } bind def
/S14 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill
       2 copy exch vpt sub exch vpt Square fill Bsquare } bind def
/S15 { BL [] 0 setdash 2 copy Bsquare fill Bsquare } bind def
/D0 { gsave translate 45 rotate 0 0 S0 stroke grestore } bind def
/D1 { gsave translate 45 rotate 0 0 S1 stroke grestore } bind def
/D2 { gsave translate 45 rotate 0 0 S2 stroke grestore } bind def
/D3 { gsave translate 45 rotate 0 0 S3 stroke grestore } bind def
/D4 { gsave translate 45 rotate 0 0 S4 stroke grestore } bind def
/D5 { gsave translate 45 rotate 0 0 S5 stroke grestore } bind def
/D6 { gsave translate 45 rotate 0 0 S6 stroke grestore } bind def
/D7 { gsave translate 45 rotate 0 0 S7 stroke grestore } bind def
/D8 { gsave translate 45 rotate 0 0 S8 stroke grestore } bind def
/D9 { gsave translate 45 rotate 0 0 S9 stroke grestore } bind def
/D10 { gsave translate 45 rotate 0 0 S10 stroke grestore } bind def
/D11 { gsave translate 45 rotate 0 0 S11 stroke grestore } bind def
/D12 { gsave translate 45 rotate 0 0 S12 stroke grestore } bind def
/D13 { gsave translate 45 rotate 0 0 S13 stroke grestore } bind def
/D14 { gsave translate 45 rotate 0 0 S14 stroke grestore } bind def
/D15 { gsave translate 45 rotate 0 0 S15 stroke grestore } bind def
/DiaE { stroke [] 0 setdash vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V closepath stroke } def
/BoxE { stroke [] 0 setdash exch hpt sub exch vpt add M
  0 vpt2 neg V hpt2 0 V 0 vpt2 V
  hpt2 neg 0 V closepath stroke } def
/TriUE { stroke [] 0 setdash vpt 1.12 mul add M
  hpt neg vpt -1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V closepath stroke } def
/TriDE { stroke [] 0 setdash vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V closepath stroke } def
/PentE { stroke [] 0 setdash gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  closepath stroke grestore } def
/CircE { stroke [] 0 setdash 
  hpt 0 360 arc stroke } def
/Opaque { gsave closepath 1 setgray fill grestore 0 setgray closepath } def
/DiaW { stroke [] 0 setdash vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V Opaque stroke } def
/BoxW { stroke [] 0 setdash exch hpt sub exch vpt add M
  0 vpt2 neg V hpt2 0 V 0 vpt2 V
  hpt2 neg 0 V Opaque stroke } def
/TriUW { stroke [] 0 setdash vpt 1.12 mul add M
  hpt neg vpt -1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V Opaque stroke } def
/TriDW { stroke [] 0 setdash vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V Opaque stroke } def
/PentW { stroke [] 0 setdash gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  Opaque stroke grestore } def
/CircW { stroke [] 0 setdash 
  hpt 0 360 arc Opaque stroke } def
/BoxFill { gsave Rec 1 setgray fill grestore } def
end
%%EndProlog
gnudict begin
gsave
%50 50 translate
0.0450 0.0450 scale
0 setgray
newpath
(Times-Roman) findfont 180 scalefont setfont
1.000 UL
LTb
738 900 M
63 0 V
7749 0 R
-63 0 V
630 900 M
(0.14) Rshow
738 1580 M
63 0 V
7749 0 R
-63 0 V
-7857 0 R
(0.16) Rshow
738 2261 M
63 0 V
7749 0 R
-63 0 V
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(0.18) Rshow
738 2941 M
63 0 V
7749 0 R
-63 0 V
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(0.2) Rshow
738 3621 M
63 0 V
7749 0 R
-63 0 V
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(0.22) Rshow
738 4301 M
63 0 V
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(0.24) Rshow
738 4982 M
63 0 V
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(0.26) Rshow
738 5662 M
63 0 V
7749 0 R
-63 0 V
-7857 0 R
(0.28) Rshow
738 900 M
0 63 V
0 4869 R
0 -63 V
738 720 M
(0) Cshow
1519 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.1) Cshow
2300 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.2) Cshow
3082 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.3) Cshow
3863 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.4) Cshow
4644 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.5) Cshow
5425 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.6) Cshow
6206 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.7) Cshow
6988 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.8) Cshow
7769 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(0.9) Cshow
8550 900 M
0 63 V
0 4869 R
0 -63 V
0 -5049 R
(1) Cshow
1.000 UL
LTb
738 900 M
7812 0 V
0 4932 V
-7812 0 V
738 900 L
1.000 UP
1.000 UL
LT0
0 -150 translate
1316 270 M
(1 particle) Rshow
1424 270 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1519 2159 M
0 -119 V
-31 119 R
62 0 V
-62 -119 R
62 0 V
750 229 R
0 -61 V
-31 61 R
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62 0 V
751 98 R
0 -41 V
-31 41 R
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62 0 V
750 -73 R
0 -30 V
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62 0 V
750 -39 R
0 -23 V
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62 0 V
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62 0 V
750 -111 R
0 -19 V
-31 19 R
62 0 V
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62 0 V
750 -149 R
0 -16 V
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62 0 V
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62 0 V
751 -131 R
0 -14 V
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62 0 V
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62 0 V
750 -249 R
0 -12 V
-31 12 R
62 0 V
-62 -12 R
62 0 V
750 -231 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
1519 2099 Pls
2300 2239 Pls
3082 2286 Pls
3863 2177 Pls
4644 2112 Pls
5425 1979 Pls
6206 1813 Pls
6988 1667 Pls
7769 1405 Pls
8550 1163 Pls
0 -150 translate
1671 270 Pls
1.000 UP
1.000 UL
LT1
1316 90 M
(2 particles) Rshow
1424 90 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1050 4011 M
0 -51 V
-31 51 R
62 0 V
-62 -51 R
62 0 V
282 101 R
0 -11 V
-31 11 R
62 0 V
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62 0 V
281 117 R
0 -14 V
-31 14 R
62 0 V
-62 -14 R
62 0 V
594 169 R
0 -73 V
-31 73 R
62 0 V
-62 -73 R
62 0 V
751 94 R
0 -26 V
-31 26 R
62 0 V
-62 -26 R
62 0 V
750 -75 R
0 -21 V
-31 21 R
62 0 V
-62 -21 R
62 0 V
750 -175 R
0 -14 V
-31 14 R
62 0 V
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62 0 V
750 -192 R
0 -24 V
-31 24 R
62 0 V
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62 0 V
750 -157 R
0 -25 V
-31 25 R
62 0 V
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62 0 V
751 -132 R
0 -13 V
-31 13 R
62 0 V
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62 0 V
750 -165 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
750 -116 R
0 -11 V
-31 11 R
62 0 V
-62 -11 R
62 0 V
1050 3985 Crs
1363 4056 Crs
1675 4160 Crs
2300 4286 Crs
3082 4330 Crs
3863 4232 Crs
4644 4039 Crs
5425 3828 Crs
6206 3646 Crs
6988 3496 Crs
7769 3319 Crs
8550 3192 Crs
0 -150 translate
1671 90 Crs
1.000 UP
1.000 UL
LT2
3368 270 M
(5 particles) Rshow
3476 270 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1050 4973 M
0 -46 V
-31 46 R
62 0 V
-62 -46 R
62 0 V
282 115 R
0 -33 V
-31 33 R
62 0 V
-62 -33 R
62 0 V
281 89 R
0 -22 V
-31 22 R
62 0 V
-62 -22 R
62 0 V
282 66 R
0 -21 V
-31 21 R
62 0 V
-62 -21 R
62 0 V
281 58 R
0 -11 V
-31 11 R
62 0 V
-62 -11 R
62 0 V
751 26 R
0 -61 V
-31 61 R
62 0 V
-62 -61 R
62 0 V
750 -48 R
0 -35 V
-31 35 R
62 0 V
-62 -35 R
62 0 V
750 -115 R
0 -33 V
-31 33 R
62 0 V
-62 -33 R
62 0 V
750 -162 R
0 -23 V
-31 23 R
62 0 V
-62 -23 R
62 0 V
750 -194 R
0 -12 V
-31 12 R
62 0 V
-62 -12 R
62 0 V
751 -166 R
0 -13 V
-31 13 R
62 0 V
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62 0 V
750 -139 R
0 -13 V
-31 13 R
62 0 V
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750 -104 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
1050 4950 Star
1363 5025 Star
1675 5087 Star
1988 5132 Star
2300 5173 Star
3082 5164 Star
3863 5068 Star
4644 4918 Star
5425 4728 Star
6206 4517 Star
6988 4338 Star
7769 4187 Star
8550 4071 Star
0 -150 translate
3723 270 Star
1.000 UP
1.000 UL
LT3
3368 90 M
(10 particles) Rshow
3476 90 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1050 5221 M
0 -43 V
-31 43 R
62 0 V
-62 -43 R
62 0 V
282 92 R
0 -45 V
-31 45 R
62 0 V
-62 -45 R
62 0 V
281 136 R
0 -28 V
-31 28 R
62 0 V
-62 -28 R
62 0 V
282 88 R
0 -21 V
-31 21 R
62 0 V
-62 -21 R
62 0 V
281 41 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
751 13 R
0 -34 V
-31 34 R
62 0 V
-62 -34 R
62 0 V
750 -43 R
0 -31 V
-31 31 R
62 0 V
-62 -31 R
62 0 V
750 -168 R
0 -14 V
-31 14 R
62 0 V
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62 0 V
750 -163 R
0 -37 V
-31 37 R
62 0 V
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62 0 V
750 -154 R
0 -13 V
-31 13 R
62 0 V
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62 0 V
751 -158 R
0 -12 V
-31 12 R
62 0 V
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62 0 V
750 -142 R
0 -19 V
-31 19 R
62 0 V
-62 -19 R
62 0 V
750 -100 R
0 -7 V
-31 7 R
62 0 V
-62 -7 R
62 0 V
1050 5199 Box
1363 5247 Box
1675 5347 Box
1988 5410 Box
2300 5436 Box
3082 5427 Box
3863 5351 Box
4644 5161 Box
5425 4973 Box
6206 4794 Box
6988 4623 Box
7769 4466 Box
8550 4353 Box
0 -150 translate
3723 90 Box
1.000 UP
1.000 UL
LT4
5420 270 M
(15 particles) Rshow
5528 270 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1519 5383 M
0 -73 V
-31 73 R
62 0 V
-62 -73 R
62 0 V
750 187 R
0 14 V
-31 -14 R
62 0 V
-62 14 R
62 0 V
751 13 R
0 -48 V
-31 48 R
62 0 V
-62 -48 R
62 0 V
750 -39 R
0 -53 V
-31 53 R
62 0 V
-62 -53 R
62 0 V
750 -132 R
0 -32 V
-31 32 R
62 0 V
-62 -32 R
62 0 V
750 -139 R
0 -24 V
-31 24 R
62 0 V
-62 -24 R
62 0 V
750 -188 R
0 -17 V
-31 17 R
62 0 V
-62 -17 R
62 0 V
751 -133 R
0 -13 V
-31 13 R
62 0 V
-62 -13 R
62 0 V
750 -140 R
0 -16 V
-31 16 R
62 0 V
-62 -16 R
62 0 V
750 -70 R
0 -15 V
-31 15 R
62 0 V
-62 -15 R
62 0 V
1519 5346 BoxF
2300 5504 BoxF
3082 5500 BoxF
3863 5411 BoxF
4644 5236 BoxF
5425 5069 BoxF
6206 4860 BoxF
6988 4712 BoxF
7769 4558 BoxF
8550 4473 BoxF
0 -150 translate
5775 270 BoxF
1.000 UP
1.000 UL
LT5
5420 90 M
(20 particles) Rshow
5528 90 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1519 5518 M
0 -154 V
-31 154 R
62 0 V
-62 -154 R
62 0 V
750 244 R
0 -61 V
-31 61 R
62 0 V
-62 -61 R
62 0 V
751 -1 R
0 -51 V
-31 51 R
62 0 V
-62 -51 R
62 0 V
750 -67 R
0 -31 V
-31 31 R
62 0 V
-62 -31 R
62 0 V
750 -118 R
0 -30 V
-31 30 R
62 0 V
-62 -30 R
62 0 V
750 -134 R
0 -20 V
-31 20 R
62 0 V
-62 -20 R
62 0 V
750 -171 R
0 -9 V
-31 9 R
62 0 V
-62 -9 R
62 0 V
751 -166 R
0 -13 V
-31 13 R
62 0 V
-62 -13 R
62 0 V
750 -120 R
0 -16 V
-31 16 R
62 0 V
-62 -16 R
62 0 V
1519 5441 Circle
2300 5578 Circle
3082 5521 Circle
3863 5412 Circle
4644 5264 Circle
5425 5105 Circle
6206 4919 Circle
6988 4742 Circle
7769 4608 Circle
0 -150 translate
5775 90 Circle
1.000 UP
1.000 UL
LT6
7472 270 M
(30 particles) Rshow
7580 270 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1519 5539 M
0 -145 V
-31 145 R
62 0 V
-62 -145 R
62 0 V
750 246 R
0 -52 V
-31 52 R
62 0 V
-62 -52 R
62 0 V
751 36 R
0 -32 V
-31 32 R
62 0 V
-62 -32 R
62 0 V
750 -118 R
0 -29 V
-31 29 R
62 0 V
-62 -29 R
62 0 V
750 -93 R
0 -38 V
-31 38 R
62 0 V
-62 -38 R
62 0 V
750 -136 R
0 -14 V
-31 14 R
62 0 V
-62 -14 R
62 0 V
750 -175 R
0 -23 V
-31 23 R
62 0 V
-62 -23 R
62 0 V
751 -158 R
0 -26 V
-31 26 R
62 0 V
-62 -26 R
62 0 V
750 -116 R
0 -11 V
-31 11 R
62 0 V
-62 -11 R
62 0 V
750 -80 R
0 -12 V
-31 12 R
62 0 V
-62 -12 R
62 0 V
1519 5467 CircleF
2300 5614 CircleF
3082 5608 CircleF
3863 5459 CircleF
4644 5333 CircleF
5425 5171 CircleF
6206 4978 CircleF
6988 4795 CircleF
7769 4660 CircleF
8550 4569 CircleF
0 -150 translate
7827 270 CircleF
1.000 UP
1.000 UL
LT7
7472 90 M
(50 particles) Rshow
7580 90 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
0 150 translate
1519 5585 M
0 -110 V
-31 110 R
62 0 V
-62 -110 R
62 0 V
750 165 R
0 -63 V
-31 63 R
62 0 V
-62 -63 R
62 0 V
751 34 R
0 -57 V
-31 57 R
62 0 V
-62 -57 R
62 0 V
750 -52 R
0 -25 V
-31 25 R
62 0 V
-62 -25 R
62 0 V
750 -123 R
0 -18 V
-31 18 R
62 0 V
-62 -18 R
62 0 V
750 -129 R
0 -29 V
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%%Trailer
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---------------0202190806514
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1.000 UL
LTb
738 360 M
63 0 V
7749 0 R
-63 0 V
630 360 M
(0.21) Rshow
738 936 M
63 0 V
7749 0 R
-63 0 V
630 936 M
(0.22) Rshow
738 1512 M
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738 2088 M
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738 4392 M
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738 4968 M
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3802 360 M
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(0.2) Cshow
5333 360 M
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(0.3) Cshow
6865 360 M
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(0.4) Cshow
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0 63 V
0 5409 R
0 -63 V
0 -5589 R
(0.5) Cshow
1.000 UL
LTb
738 360 M
7812 0 V
0 5472 V
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738 360 L
1.500 UP
1.000 UL
LT0
7700 5679 M
(E=0.04 GK) Rshow
7808 5679 M
526 0 V
-526 31 R
0 -62 V
526 62 R
0 -62 V
63 -4029 R
0 -242 V
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3802 3153 M
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62 0 V
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1044 4016 M
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3802 3071 Pls
1044 3951 Pls
8071 5679 Pls
1.500 UP
1.000 UL
LT1
7700 5499 M
(E=0.04) Rshow
7808 5499 M
526 0 V
-526 31 R
0 -62 V
526 62 R
0 -62 V
63 -3873 R
0 -85 V
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3802 3225 M
0 -78 V
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62 0 V
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1044 3995 M
0 -19 V
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62 0 V
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62 0 V
8397 1553 Crs
3802 3186 Crs
1044 3990 Crs
8071 5499 Crs
1.000 UL
LT2
7700 5319 M
(linear fit) Rshow
7808 5319 M
526 0 V
738 4069 M
79 -24 V
79 -25 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -25 V
79 -24 V
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79 -25 V
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79 -24 V
79 -25 V
79 -24 V
79 -25 V
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79 -24 V
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78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -25 V
79 -24 V
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79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -25 V
1.500 UP
1.000 UL
LT3
7700 5139 M
(E=0.2) Rshow
7808 5139 M
526 0 V
-526 31 R
0 -62 V
526 62 R
0 -62 V
63 -2924 R
0 -246 V
-31 246 R
62 0 V
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62 0 V
3802 3584 M
0 -39 V
-31 39 R
62 0 V
-62 -39 R
62 0 V
2270 4026 M
0 -32 V
-31 32 R
62 0 V
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-542 108 R
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-31 -45 R
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-62 45 R
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-286 206 R
0 -207 V
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0 -179 V
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0 -214 V
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62 0 V
8397 2061 Star
3802 3564 Star
2270 4010 Star
1759 4124 Star
1504 4249 Star
1249 4311 Star
1044 4302 Star
8071 5139 Star
1.000 UL
LT4
7700 4959 M
(linear fit) Rshow
7808 4959 M
526 0 V
738 4461 M
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
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79 -24 V
79 -24 V
79 -25 V
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79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
1.500 UP
1.000 UL
LT5
7700 4779 M
(E=0.9) Rshow
7808 4779 M
526 0 V
-526 31 R
0 -62 V
526 62 R
0 -62 V
8397 745 M
0 -43 V
-31 43 R
62 0 V
-62 -43 R
62 0 V
3802 2173 M
0 -45 V
-31 45 R
62 0 V
-62 -45 R
62 0 V
2270 2654 M
0 -43 V
-31 43 R
62 0 V
-62 -43 R
62 0 V
-542 195 R
0 -44 V
-31 44 R
62 0 V
-62 -44 R
62 0 V
-286 96 R
0 -46 V
-31 46 R
62 0 V
-62 -46 R
62 0 V
-286 157 R
0 -89 V
-31 89 R
62 0 V
-62 -89 R
62 0 V
-236 157 R
0 -51 V
-31 51 R
62 0 V
-62 -51 R
62 0 V
8397 724 Box
3802 2151 Box
2270 2632 Box
1759 2784 Box
1504 2835 Box
1249 2924 Box
1044 3011 Box
8071 4779 Box
1.000 UL
LT6
7700 4599 M
(linear fit) Rshow
7808 4599 M
526 0 V
738 3107 M
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
78 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
79 -24 V
78 -25 V
79 -24 V
79 -24 V
79 -25 V
79 -24 V
79 -25 V
1.500 UP
1.000 UL
LT7
7700 4419 M
(microcanonical) Rshow
8397 2179 BoxF
3802 4313 BoxF
2270 4985 BoxF
1759 5202 BoxF
1504 5310 BoxF
1249 5419 BoxF
1044 5506 BoxF
8071 4419 BoxF
1.000 UL
LT8
[] 0 setdash
7700 4239 M
(linear fit) Rshow
7808 4239 M
526 0 V
738 5609 M
79 -34 V
79 -33 V
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62 0 V
128 163 R
0 -24 V
-31 24 R
62 0 V
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62 0 V
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0 -24 V
-31 24 R
62 0 V
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62 0 V
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0 -26 V
-31 26 R
62 0 V
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62 0 V
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0 -26 V
-31 26 R
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0 -26 V
-31 26 R
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0 -27 V
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0 -28 V
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0 -29 V
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0 -30 V
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0 -30 V
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0 -31 V
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0 -32 V
-31 32 R
62 0 V
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62 0 V
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0 -33 V
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0 -33 V
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0 -33 V
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0 -33 V
-31 33 R
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0 -34 V
-31 34 R
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0 -34 V
-31 34 R
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0 -34 V
-31 34 R
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0 -35 V
-31 35 R
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0 -34 V
-31 34 R
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0 -35 V
-31 35 R
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0 -35 V
-31 35 R
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0 -35 V
-31 35 R
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0 -34 V
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0 -34 V
-31 34 R
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0 -33 V
-31 33 R
62 0 V
-62 -33 R
62 0 V
128 -71 R
0 -33 V
-31 33 R
62 0 V
-62 -33 R
62 0 V
709 403 Crs
868 490 Crs
1026 577 Crs
1184 665 Crs
1343 754 Crs
1501 845 Crs
1660 936 Crs
1818 1030 Crs
1976 1124 Crs
2135 1221 Crs
2293 1320 Crs
2452 1422 Crs
2610 1526 Crs
2768 1633 Crs
2927 1744 Crs
3085 1859 Crs
3244 1978 Crs
3402 2102 Crs
3560 2229 Crs
3719 2361 Crs
3877 2497 Crs
4036 2637 Crs
4194 2781 Crs
4352 2928 Crs
4511 3079 Crs
4669 3233 Crs
4828 3390 Crs
4986 3548 Crs
5144 3704 Crs
5303 3859 Crs
5461 4015 Crs
5620 4169 Crs
5778 4320 Crs
5936 4464 Crs
6095 4600 Crs
6253 4729 Crs
6412 4842 Crs
6570 4944 Crs
6728 5030 Crs
6887 5100 Crs
7045 5154 Crs
7204 5193 Crs
7362 5207 Crs
7520 5197 Crs
7679 5169 Crs
7837 5120 Crs
7996 5048 Crs
8154 4959 Crs
8312 4866 Crs
8471 4762 Crs
2173 5499 Crs
1.000 UP
1.000 UL
LT2
1818 5319 M
(E=0.12) Rshow
1926 5319 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
709 405 M
0 -3 V
-31 3 R
62 0 V
-62 -3 R
62 0 V
128 92 R
0 -6 V
-31 6 R
62 0 V
-62 -6 R
62 0 V
127 94 R
0 -7 V
-31 7 R
62 0 V
-62 -7 R
62 0 V
127 96 R
0 -8 V
-31 8 R
62 0 V
-62 -8 R
62 0 V
128 98 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
127 101 R
0 -11 V
-31 11 R
62 0 V
-62 -11 R
62 0 V
128 104 R
0 -12 V
-31 12 R
62 0 V
-62 -12 R
62 0 V
127 107 R
0 -13 V
-31 13 R
62 0 V
-62 -13 R
62 0 V
127 110 R
0 -14 V
-31 14 R
62 0 V
-62 -14 R
62 0 V
128 111 R
0 -14 V
-31 14 R
62 0 V
-62 -14 R
62 0 V
127 114 R
0 -15 V
-31 15 R
62 0 V
-62 -15 R
62 0 V
128 116 R
0 -16 V
-31 16 R
62 0 V
-62 -16 R
62 0 V
127 119 R
0 -17 V
-31 17 R
62 0 V
-62 -17 R
62 0 V
127 123 R
0 -18 V
-31 18 R
62 0 V
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62 0 V
128 128 R
0 -19 V
-31 19 R
62 0 V
-62 -19 R
62 0 V
127 132 R
0 -19 V
-31 19 R
62 0 V
-62 -19 R
62 0 V
128 137 R
0 -20 V
-31 20 R
62 0 V
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0 -20 V
-31 20 R
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0 -21 V
-31 21 R
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128 151 R
0 -22 V
-31 22 R
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0 -23 V
-31 23 R
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0 -23 V
-31 23 R
62 0 V
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62 0 V
127 167 R
0 -24 V
-31 24 R
62 0 V
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62 0 V
127 173 R
0 -25 V
-31 25 R
62 0 V
-62 -25 R
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128 177 R
0 -25 V
-31 25 R
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127 179 R
0 -27 V
-31 27 R
62 0 V
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128 185 R
0 -28 V
-31 28 R
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0 -28 V
-31 28 R
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0 -28 V
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0 -30 V
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0 -30 V
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0 -31 V
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0 -31 V
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0 -32 V
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0 -32 V
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0 -33 V
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0 -33 V
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0 -33 V
-31 33 R
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127 117 R
0 -34 V
-31 34 R
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0 -34 V
-31 34 R
62 0 V
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0 -35 V
-31 35 R
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128 62 R
0 -35 V
-31 35 R
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0 -35 V
-31 35 R
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0 -34 V
-31 34 R
62 0 V
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128 1 R
0 -34 V
-31 34 R
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127 -18 R
0 -34 V
-31 34 R
62 0 V
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62 0 V
128 -34 R
0 -34 V
-31 34 R
62 0 V
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62 0 V
127 -40 R
0 -33 V
-31 33 R
62 0 V
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62 0 V
127 -38 R
0 -33 V
-31 33 R
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128 -64 R
0 -33 V
-31 33 R
62 0 V
-62 -33 R
62 0 V
709 404 Star
868 491 Star
1026 579 Star
1184 667 Star
1343 756 Star
1501 847 Star
1660 939 Star
1818 1033 Star
1976 1130 Star
2135 1227 Star
2293 1326 Star
2452 1427 Star
2610 1530 Star
2768 1635 Star
2927 1745 Star
3085 1858 Star
3244 1975 Star
3402 2096 Star
3560 2221 Star
3719 2351 Star
3877 2487 Star
4036 2627 Star
4194 2770 Star
4352 2919 Star
4511 3071 Star
4669 3224 Star
4828 3381 Star
4986 3540 Star
5144 3701 Star
5303 3863 Star
5461 4019 Star
5620 4174 Star
5778 4327 Star
5936 4473 Star
6095 4609 Star
6253 4737 Star
6412 4851 Star
6570 4954 Star
6728 5037 Star
6887 5105 Star
7045 5158 Star
7204 5184 Star
7362 5192 Star
7520 5182 Star
7679 5149 Star
7837 5097 Star
7996 5029 Star
8154 4956 Star
8312 4884 Star
8471 4787 Star
2173 5319 Star
1.000 UL
LT3
1818 5139 M
(stochastic) Rshow
1926 5139 M
495 0 V
630 360 M
80 44 V
80 43 V
80 44 V
80 44 V
80 44 V
80 45 V
80 44 V
80 45 V
80 45 V
80 45 V
80 46 V
80 46 V
80 47 V
80 47 V
80 47 V
80 48 V
80 49 V
80 49 V
80 50 V
80 50 V
80 51 V
80 52 V
80 53 V
80 53 V
80 54 V
80 55 V
80 55 V
80 57 V
80 57 V
80 58 V
80 60 V
80 60 V
80 61 V
80 62 V
80 63 V
80 64 V
80 65 V
80 66 V
80 67 V
80 67 V
80 69 V
80 70 V
80 71 V
80 72 V
80 72 V
80 74 V
80 74 V
80 75 V
80 76 V
80 76 V
80 77 V
80 78 V
80 77 V
80 79 V
80 78 V
80 79 V
80 79 V
80 78 V
80 78 V
80 78 V
80 77 V
80 77 V
80 75 V
80 74 V
80 73 V
80 72 V
80 69 V
80 68 V
80 66 V
80 63 V
80 60 V
80 58 V
80 54 V
80 51 V
80 48 V
80 44 V
80 40 V
80 36 V
80 31 V
80 27 V
80 22 V
80 18 V
80 13 V
80 8 V
80 2 V
80 -2 V
80 -8 V
80 -12 V
80 -18 V
80 -23 V
80 -28 V
80 -34 V
80 -38 V
80 -44 V
80 -49 V
80 -54 V
80 -60 V
80 -66 V
80 -76 V
1.000 UL
LT4
1818 4959 M
(equi) Rshow
1926 4959 M
495 0 V
630 360 M
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
80 55 V
80 55 V
80 56 V
80 55 V
stroke
(Helvetica) findfont 180 scalefont setfont
4500 -100 M
(r) show
0 2500 translate
90 rotate
0 0 moveto
(2) show
(Symbol) findfont 180 scalefont setfont
(p) show
(Helvetica) findfont 180 scalefont setfont
(r)show
(Symbol) findfont 180 scalefont setfont
(y) show
(Helvetica) findfont 120 scalefont setfont
0 -30 rmoveto
(0) show
0 30 rmoveto
(Helvetica) findfont 180 scalefont setfont
((r,E;2)) show
grestore
end
showpage
%%Trailer
%%DocumentFonts: Times-Roman

---------------0202190806514
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showpage
%%Trailer
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/C15 { BL [] 0 setdash 2 copy vpt 0 360 arc closepath fill
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/Rec   { newpath 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto
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/Square { dup Rec } bind def
/Bsquare { vpt sub exch vpt sub exch vpt2 Square } bind def
/S0 { BL [] 0 setdash 2 copy moveto 0 vpt rlineto BL Bsquare } bind def
/S1 { BL [] 0 setdash 2 copy vpt Square fill Bsquare } bind def
/S2 { BL [] 0 setdash 2 copy exch vpt sub exch vpt Square fill Bsquare } bind def
/S3 { BL [] 0 setdash 2 copy exch vpt sub exch vpt2 vpt Rec fill Bsquare } bind def
/S4 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt Square fill Bsquare } bind def
/S5 { BL [] 0 setdash 2 copy 2 copy vpt Square fill
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/S6 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill Bsquare } bind def
/S7 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt vpt2 Rec fill
       2 copy vpt Square fill
       Bsquare } bind def
/S8 { BL [] 0 setdash 2 copy vpt sub vpt Square fill Bsquare } bind def
/S9 { BL [] 0 setdash 2 copy vpt sub vpt vpt2 Rec fill Bsquare } bind def
/S10 { BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt Square fill
       Bsquare } bind def
/S11 { BL [] 0 setdash 2 copy vpt sub vpt Square fill 2 copy exch vpt sub exch vpt2 vpt Rec fill
       Bsquare } bind def
/S12 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill Bsquare } bind def
/S13 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill
       2 copy vpt Square fill Bsquare } bind def
/S14 { BL [] 0 setdash 2 copy exch vpt sub exch vpt sub vpt2 vpt Rec fill
       2 copy exch vpt sub exch vpt Square fill Bsquare } bind def
/S15 { BL [] 0 setdash 2 copy Bsquare fill Bsquare } bind def
/D0 { gsave translate 45 rotate 0 0 S0 stroke grestore } bind def
/D1 { gsave translate 45 rotate 0 0 S1 stroke grestore } bind def
/D2 { gsave translate 45 rotate 0 0 S2 stroke grestore } bind def
/D3 { gsave translate 45 rotate 0 0 S3 stroke grestore } bind def
/D4 { gsave translate 45 rotate 0 0 S4 stroke grestore } bind def
/D5 { gsave translate 45 rotate 0 0 S5 stroke grestore } bind def
/D6 { gsave translate 45 rotate 0 0 S6 stroke grestore } bind def
/D7 { gsave translate 45 rotate 0 0 S7 stroke grestore } bind def
/D8 { gsave translate 45 rotate 0 0 S8 stroke grestore } bind def
/D9 { gsave translate 45 rotate 0 0 S9 stroke grestore } bind def
/D10 { gsave translate 45 rotate 0 0 S10 stroke grestore } bind def
/D11 { gsave translate 45 rotate 0 0 S11 stroke grestore } bind def
/D12 { gsave translate 45 rotate 0 0 S12 stroke grestore } bind def
/D13 { gsave translate 45 rotate 0 0 S13 stroke grestore } bind def
/D14 { gsave translate 45 rotate 0 0 S14 stroke grestore } bind def
/D15 { gsave translate 45 rotate 0 0 S15 stroke grestore } bind def
/DiaE { stroke [] 0 setdash vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V closepath stroke } def
/BoxE { stroke [] 0 setdash exch hpt sub exch vpt add M
  0 vpt2 neg V hpt2 0 V 0 vpt2 V
  hpt2 neg 0 V closepath stroke } def
/TriUE { stroke [] 0 setdash vpt 1.12 mul add M
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  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V closepath stroke } def
/TriDE { stroke [] 0 setdash vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V closepath stroke } def
/PentE { stroke [] 0 setdash gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  closepath stroke grestore } def
/CircE { stroke [] 0 setdash 
  hpt 0 360 arc stroke } def
/Opaque { gsave closepath 1 setgray fill grestore 0 setgray closepath } def
/DiaW { stroke [] 0 setdash vpt add M
  hpt neg vpt neg V hpt vpt neg V
  hpt vpt V hpt neg vpt V Opaque stroke } def
/BoxW { stroke [] 0 setdash exch hpt sub exch vpt add M
  0 vpt2 neg V hpt2 0 V 0 vpt2 V
  hpt2 neg 0 V Opaque stroke } def
/TriUW { stroke [] 0 setdash vpt 1.12 mul add M
  hpt neg vpt -1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt 1.62 mul V Opaque stroke } def
/TriDW { stroke [] 0 setdash vpt 1.12 mul sub M
  hpt neg vpt 1.62 mul V
  hpt 2 mul 0 V
  hpt neg vpt -1.62 mul V Opaque stroke } def
/PentW { stroke [] 0 setdash gsave
  translate 0 hpt M 4 {72 rotate 0 hpt L} repeat
  Opaque stroke grestore } def
/CircW { stroke [] 0 setdash 
  hpt 0 360 arc Opaque stroke } def
/BoxFill { gsave Rec 1 setgray fill grestore } def
end
%%EndProlog
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0 -1 V
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64 -3 R
-31 0 R
62 0 V
-62 0 R
62 0 V
64 -2 R
-31 0 R
62 0 V
-62 0 R
62 0 V
678 480 Crs
773 719 Crs
868 957 Crs
963 1193 Crs
1058 1429 Crs
1153 1666 Crs
1248 1901 Crs
1343 2131 Crs
1438 2356 Crs
1533 2580 Crs
1628 2803 Crs
1723 3027 Crs
1818 3248 Crs
1913 3464 Crs
2008 3667 Crs
2103 3859 Crs
2198 4041 Crs
2293 4219 Crs
2388 4394 Crs
2483 4547 Crs
2578 4692 Crs
2673 4817 Crs
2768 4934 Crs
2863 5038 Crs
2958 5119 Crs
3054 5182 Crs
3149 5220 Crs
3244 5246 Crs
3339 5259 Crs
3434 5251 Crs
3529 5219 Crs
3624 5171 Crs
3719 5106 Crs
3814 5029 Crs
3909 4940 Crs
4004 4831 Crs
4099 4709 Crs
4194 4573 Crs
4289 4421 Crs
4384 4265 Crs
4479 4092 Crs
4574 3918 Crs
4669 3736 Crs
4764 3545 Crs
4859 3354 Crs
4954 3166 Crs
5049 2976 Crs
5144 2782 Crs
5239 2598 Crs
5334 2423 Crs
5430 2246 Crs
5525 2076 Crs
5620 1916 Crs
5715 1766 Crs
5810 1626 Crs
5905 1494 Crs
6000 1368 Crs
6095 1253 Crs
6190 1143 Crs
6285 1045 Crs
6380 959 Crs
6475 879 Crs
6570 808 Crs
6665 742 Crs
6760 684 Crs
6855 633 Crs
6950 588 Crs
7045 551 Crs
7140 517 Crs
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7330 466 Crs
7425 446 Crs
7520 429 Crs
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7901 389 Crs
7996 383 Crs
8091 378 Crs
8186 374 Crs
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8376 368 Crs
8471 366 Crs
8086 5499 Crs
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7731 5319 M
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80 202 V
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80 200 V
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80 -8 V
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80 -5 V
80 -5 V
80 -4 V
80 -3 V
80 -3 V
80 -2 V
80 -2 V
80 -2 V
1.000 UL
LT3
7731 5139 M
(equi) Rshow
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495 0 V
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80 276 V
80 275 V
80 273 V
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80 266 V
80 261 V
80 254 V
80 247 V
80 240 V
80 231 V
80 221 V
80 211 V
80 201 V
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%%Trailer
%%DocumentFonts: Times-Roman

---------------0202190806514
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925 394 Pls
1050 448 Pls
1175 530 Pls
1300 637 Pls
1425 773 Pls
1550 928 Pls
1675 1122 Pls
1800 1330 Pls
1925 1576 Pls
2050 1803 Pls
2175 2082 Pls
2300 2381 Pls
2425 2673 Pls
2550 2988 Pls
2675 3308 Pls
2800 3620 Pls
2925 3923 Pls
3050 4239 Pls
3175 4536 Pls
3300 4803 Pls
3425 5012 Pls
3550 5213 Pls
3675 5422 Pls
3800 5543 Pls
3925 5640 Pls
4050 5709 Pls
4175 5691 Pls
4300 5645 Pls
4425 5551 Pls
4550 5416 Pls
4675 5234 Pls
4800 5027 Pls
4925 4766 Pls
5050 4522 Pls
5175 4240 Pls
5300 3944 Pls
5425 3624 Pls
5550 3299 Pls
5675 3006 Pls
5800 2710 Pls
5925 2433 Pls
6050 2151 Pls
6175 1903 Pls
6300 1647 Pls
6425 1444 Pls
6550 1273 Pls
6675 1094 Pls
6800 964 Pls
6925 841 Pls
7050 747 Pls
7175 669 Pls
7300 599 Pls
7425 542 Pls
7550 496 Pls
7675 464 Pls
7800 434 Pls
7925 414 Pls
8050 399 Pls
8175 388 Pls
8300 381 Pls
8425 372 Pls
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(E=0.08 irre) Rshow
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1402 759 Crs
1592 1008 Crs
1781 1306 Crs
1971 1663 Crs
2161 2062 Crs
2350 2519 Crs
2540 2975 Crs
2730 3433 Crs
2919 3906 Crs
3109 4354 Crs
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3488 5094 Crs
3678 5365 Crs
3868 5527 Crs
4057 5595 Crs
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4437 5458 Crs
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5006 4587 Crs
5195 4156 Crs
5385 3724 Crs
5575 3258 Crs
5764 2817 Crs
5954 2398 Crs
6144 1991 Crs
6333 1658 Crs
6523 1362 Crs
6713 1117 Crs
6902 918 Crs
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8040 408 Crs
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1.000 UL
LT2
7731 5319 M
(stochastic) Rshow
7839 5319 M
495 0 V
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%%Trailer
%%DocumentFonts: Times-Roman

---------------0202190806514
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0 -5589 R
(0.9) Cshow
8334 360 M
0 63 V
0 5409 R
0 -63 V
0 -5589 R
(1) Cshow
1.000 UL
LTb
846 360 M
7488 0 V
0 5472 V
-7488 0 V
846 360 L
1.000 UP
1.000 UL
LT0
7515 5679 M
(irreversible dynamics) Rshow
7623 5679 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
846 5259 M
0 -126 V
-31 126 R
62 0 V
815 5133 M
62 0 V
905 113 R
0 -189 V
-31 189 R
62 0 V
-62 -189 R
62 0 V
905 -387 R
0 -139 V
-31 139 R
62 0 V
-62 -139 R
62 0 V
905 -532 R
0 -102 V
-31 102 R
62 0 V
-62 -102 R
62 0 V
905 -635 R
0 -96 V
-31 96 R
62 0 V
-62 -96 R
62 0 V
905 -828 R
0 -70 V
-31 70 R
62 0 V
-62 -70 R
62 0 V
905 -703 R
0 -68 V
-31 68 R
62 0 V
-62 -68 R
62 0 V
7398 903 M
0 -64 V
-31 64 R
62 0 V
-62 -64 R
62 0 V
8334 429 M
0 -41 V
-31 41 R
62 0 V
-62 -41 R
62 0 V
846 5196 Pls
1782 5152 Pls
2718 4600 Pls
3654 3948 Pls
4590 3214 Pls
5526 2303 Pls
6462 1531 Pls
7398 871 Pls
8334 408 Pls
7870 5679 Pls
1.000 UP
1.000 UL
LT1
7515 5499 M
(large N limit of reversible dynamics) Rshow
7623 5499 M
495 0 V
-495 31 R
0 -62 V
495 62 R
0 -62 V
846 5148 M
0 -27 V
-31 27 R
62 0 V
-62 -27 R
62 0 V
905 -25 R
0 -17 V
-31 17 R
62 0 V
-62 -17 R
62 0 V
905 -475 R
0 -16 V
-31 16 R
62 0 V
-62 -16 R
62 0 V
905 -660 R
0 -14 V
-31 14 R
62 0 V
-62 -14 R
62 0 V
905 -782 R
0 -10 V
-31 10 R
62 0 V
-62 -10 R
62 0 V
905 -840 R
0 -9 V
-31 9 R
62 0 V
-62 -9 R
62 0 V
905 -714 R
0 -5 V
-31 5 R
62 0 V
-62 -5 R
62 0 V
7398 834 M
0 -5 V
-31 5 R
62 0 V
-62 -5 R
62 0 V
8334 434 M
0 -5 V
-31 5 R
62 0 V
-62 -5 R
62 0 V
846 5135 Crs
1782 5088 Crs
2718 4596 Crs
3654 3921 Crs
4590 3127 Crs
5526 2278 Crs
6462 1557 Crs
7398 832 Crs
8334 431 Crs
7870 5499 Crs
stroke
4500 -150 M
(Helvetica) findfont 180 scalefont setfont
(E) show
0 3000 translate
90 rotate
0 0 moveto
(Symbol) findfont 180 scalefont setfont
(k) show
(Helvetica) findfont 180 scalefont setfont
((E)) show
stroke
grestore
end
showpage
%%Trailer
%%DocumentFonts: Times-Roman

---------------0202190806514
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Content-Transfer-Encoding: 7bit
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 2 0 360 newpath arc fill stroke grestore} def 
 
 /puntob { gsave % uso: x1 y1 punto 
 5 0 360 newpath arc stroke grestore} def 
 
 /cerchio { gsave % uso: x1 y1 r cerchio 
 0 360 newpath arc stroke grestore} def 
 
 /puntbb { gsave % uso: x1 y1 punto 
 5 0 360 newpath arc fill stroke grestore} def 
 
 /tlinea { gsave % uso: x1 y1 x2 y2 tlinea 
 moveto [4 4] 2 setdash lineto stroke grestore} def 
 
/origine1assexper2pilacon|P_2-P_1| { 4 2 roll 
2 copy translate exch 4 1 roll sub 3 1 roll exch 
sub 2 copy atan rotate 2 copy exch 4 1 roll mul 
3 1 roll mul add sqrt } def
/punta0 { 0 0 moveto dup dup 0 exch 2 div lineto 0 
lineto 0 exch 2 div neg lineto 0 0 lineto fill stroke } def
/freccia0 { 0 0 moveto 0 2 copy lineto stroke exch 2
div exch translate 3 punta0 stroke } def
/freccia{ gsave origine1assexper2pilacon|P_2-P_1| 
freccia0 grestore} def
 
 /slinea { gsave % uso: x1 y1 x2 y2 n slinea 
 setlinewidth 4 2 roll moveto lineto stroke grestore} def 
 
 /sfreccia { gsave % uso: x1 y1 x2 y2 n 
 setlinewidth freccia grestore } def 
 2 2 scale
 0.5 setlinewidth 
 115 15 moveto 185 15 lineto 
 115 15 moveto 115 85 lineto 
 115 85 moveto 185 85 lineto 
 185 15 moveto 185 85 lineto 
 stroke 
 /q1 { gsave 
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 /q2 {gsave 
 90 180 newpath arc stroke grestore} def 
 /q3 { gsave 
 180 270 newpath arc stroke grestore} def 
 /q4 { gsave 
 270 360 newpath arc stroke grestore} def 
 /cerchio { gsave % uso: x1 y1 r cerchio 
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 115 15 30 q1 
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 185 85 30 q3 
 185 15 30 q2 
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 155 10 185 10 0.5 sfreccia 
 115 15 136 36 0.5 sfreccia 
 150 50 160 60 0.5 sfreccia 
 150 30 160 35 0.5 sfreccia 
 128 47 130 57 0.5 sfreccia 
 170 55 180 50 0.5 sfreccia 
 130 90 170 90 0.5 sfreccia 
 stroke 

---------------0202190806514--
