Topology Seminar: Christian Kassel (CNRS & University of Strasbourg)
- Date: 05/10/2011
- Time: 16:00
Location:
University of British Columbia
Topic:
A continuous non-abelian one-cocycle with palindromic values
Description:
Using a group of automorphisms of the free group F_2 isomorphic to the braid group B_3, we construct a non-abelian one-cocycle P: F_2 --> F_2, which turns out to take palindromic values and to be continuous for the profinite topology on F_2. We characterize the elements of the image of the map P and use B_3 to express the relation between elements having the same image. (Joint work with Christophe Reutenauer, UQAM.)
Schedule:
WMAX 110
Sponsor:
