2009 Topology Seminar - 05
- Date: 02/25/2009
Lecturer(s):
Alexandra Pettet (University of Michigan)
Location:
University of British Columbia
Topic:
Dynamics of Out(F): twisting out fully irreducible automorphisms
Description:
The outer automorphism group Out(F) of a free group F of finite rank
shares many properties with the mapping class group of a surface,
however the techniques for studying these groups are generally quite
different. Analogues of the pseudo-Anosov elements of the mapping class
group are the so-called fully irreducible automorphisms, which exhibit
north-south dynamics on Culler-Vogtmann's Outer Space. We will explain
a method for constructing these automorphisms and suggest why this
construction should be useful. This is joint work with Matt Clay
(University of Oklahoma).
Schedule:
3:00pm-4:00pm, WMAX 110
Sponsor:
