Expansion and random walks in SL_n
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Wed, 30/01 10:30 |
Henry Bradford -- Queen's Lecture C |
Algebra Kinderseminar  |
Queen's College |
| 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”. | |||