Geometry Topology Seminar
Monday, January 14, 2013 - 2:05pm
1 hour (actually 50 minutes)
We give a simple generating set for the following three closely related groups: the hypereliptic Torelli group, the kernel of the integral Burau representation, and the fundamental group of the branch locus of the period mapping. Our theorem confirms a conjecture of Hain. This is joint work with Tara Brendle and Andy Putman.