EVENT DETAILS AND ABSTRACT

Title: Local rigidity revisited
Speaker: David Fisher
Speaker Info: Indiana University
Brief Description:
Special Note:
Abstract:

After giving some background, history and motivation, I will explain a new, simplified proof of some results on local rigidity of group actions. This result applies to a large class of actions including all affine algebraic actions of cocompact lattices in all noncompact simple Lie groups with property (T). The proof is very simple, but does require the use of ultrafilters. I will attempt to make ultrafilters user friendly.