Jitomirskaya S., Simon B.
Operators with Singular Continuous Spectrum,
III. Almost Periodic Schrodinger Operators
(14K, AMSTeX)

ABSTRACT.  We prove that one-dimensional Schr\"odinger operators with 
even almost periodic potential have no point spectrum for a dense 
$G_\delta$ in the hull.  This implies purely singular continuous 
spectrum for the almost Mathieu equation for coupling larger than $2$ 
and a dense $G_\delta$ in $\theta$ even if the frequency is an irrational 
with good Diophantine properties.