Swiss Knots 2011

Knot Theory and Algebra

Lake Thun, May 23-27

Non commutative homological representations of Torelli groups

Prof. Dr. Christian Blanchet's talk
Date: 25.05.11   Time: 10.00 - 10.50   Room: Gwatt Zentrum

Abstract: We show that the braid groups of a surface with boundary have Heisenberg group quotients. We use this to define a local system on the configuration space of n ≥ 2 points in the surface, and study action of the Torelli group on the corresponding homology.