skip to main content
Caltech

Logic Seminar

Wednesday, August 12, 2020
12:00pm to 1:00pm
Add to Cal
Online Event
Property (T) groups: cohomology vs lifting properties
Pieter Spaas, Department of Mathematics, UCLA,

We will discuss measurable cohomology of groups with Kazhdan's property (T). This will lead us to some cohomological characterizations of property (T), together with implications towards (the absence of) various lifting properties of these groups. In particular, we will construct "genuine" approximate homomorphisms into matrix algebras for a large class of property (T) groups. This is based on a recent joint work with Adrian Ioana and Matthew Wiersma.

For more information, please contact Math Department by phone at 626-395-4335 or by email at [email protected].