Seminar series
Date
Wed, 30 Jan 2013
10:30
10:30
Location
Queen's College
Speaker
Henry Bradford -- Queen's Lecture C
I will look at some tools for proving expansion in the Cayley graphs of finite quotients of a given infinite group, with particular emphasis on Bourgain-Gamburd’s work on expansion in Zariski-dense subgroups of SL_2(Z), and speculate to what extent such expansion may be said to be “uniform”.