Brandeis-Harvard-MIT-Northeastern

JOINT MATHEMATICS COLLOQUIUM


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
Comments to: t.zhou@northeastern.edu