The topology at infinity of an arithmetic group

Andrew Putman

University of Notre Dame

Northeastern University

Thursday, December 10, 2020

Talk at 4:30 p.m. online (only by invitation)


Abstract: Let G be an arithmetic group like SL(n,Z). Borel and Serre proved a beautiful theorem showing that the topology of G "at infinity" can be modeled by an appropriate Tits building. I will discuss a circle of ideas combining insights from topology, number theory, and representation theory to use this to shed light on G and its subgroups.

Home Web page: Alexandru I. Suciu Posted: November 28, 2020
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