Professor, Mathematics, U.T Austin (hook 'em horns!)
PMA 9.112 (formerly RLM 9.112).
3/4/2021 Geometry seminar notes on big mapping class groups:
PDF: pre post; Notability format: pre post
Black Lives Matter!
(and what about All Lives Matter?)
Student quote about n!: "You're not allowed to get excited in math, because someone decided numbers get real big when you do that."
In spring 2021 I am teaching M373K (Algebraic Structures). (students: please access it via canvas)
A few links that inspire me---maybe you too?
The story of our own Bill Wolesensky
Arnold Schwarzeneggar's July 4 message (2020)
Lessons by a young man, for one much older
Here is my CV and below are my papers. At the bottom of this page there are also some expository notes. Please email me at
As part of a grant application I had to summarize five years of research in two pages. I'm posting the summary here in case it is interesting to someone. (I'm afraid it will only be readable to mathematicians.)