Constructions of Expanders Using Group Theory

Video of this lecture

Topic:Constructions of Expanders Using Group Theory
Speaker:Martin Kassabov
Affiliation:Cornell University and von Neumann Fellow, School of Mathematics
Date:Tuesday, November 3
Time/Room:10:30am - 12:30pm/S-101
Video Link:

I will survey some constructions of expander graphs using variants of Kazhdan property T . First, I describe an approach to property T using bounded generation and then I will describe a recent method based on the geometric properties of configurations of subspaces in a finite dimensional Euclidean space.