Pure Maths Colloquium - Rigid groups - Prof Piotr Nowak (IMPAN, Warsaw) Seminar
- Time:
- 15:00 - 16:00
- Date:
- 26 October 2018
- Venue:
- Building 54 (Mathematics), lecture room 10037 (10B), Highfield Campus, University of Southampton, SO17 1BJ
For more information regarding this seminar, please email Dr Jan Spakula at jan.spakula@soton.ac.uk .
Event details
Abstract: Property (T) is a rigidity property of locally compact groups. It can be defined as the existence of a fixed point for every affine isometric action of a given group on a Hilbert space. In this talk I will discuss property (T) and its applications. I will also present the recent computer-assisted proof (joint with Marek Kaluba and Narutaka Ozawa) of property (T) for the automorphism group of the free group on 5 generators. The proof uses semidefinite programming, a branch of convex optimization.
Speaker information
Prof Piotr Nowak, Institute of Mathematics, Polish Academy of Sciences (IMPAN), Warsaw, Poland. Associate Professor and Deputy Director for Scientific Matters