Event Type:

Department Colloquium

Date/Time:

Monday, April 30, 2012 - 09:00

Location:

Kidder 364

Guest Speaker:

Institution:

University of British Columbia

Abstract:

A useful way to understand a group is via a nice action on a

topological space. The so-called Culler-Vogtmann Outer space, a space

consisting of finite marked graphs, has been instrumental to studying

the outer automorphism group of a finite rank free group. Currently

there is a lot of activity devoted to developing a good metric theory

for this space. I will discuss some qualitative properties of geodesics

in Outer space, equipped with the so-called Lipschitz metric. This will

feature some joint work with Matt Clay.

Host: