# PIMS Distinguished Lecture

**
Fri., Oct. 20, 2023 3:30 p.m.
**

**
Location: Research and Innovation Centre 209 and Live Stream (Zoom)
**

**Speaker:** Ben Willliams, University of British Columbia

**Title:** Topology and Azumaya algebras (83 kB)

**Abstract: **

An Azumaya algebra is something that is "locally" isomorphic to a matrix algebra. By varying the sense of "locally", we arrive at different incarnations of the concept. The motivating example is that of central simple algebras over a field. In this talk, I will concentrate on the topological aspects of the idea. I will give examples and show that the flexibility of topology allows one to produce counterexamples in algebra. At the end, I will mention some problems I do not know how to solve.

**For Zoom, please pre-register at:** https://uregina-ca.zoom.us/meeting/register/tJYrdOGhrj4qG9YLTQVGGUWuH1mWofAQJIHL

The zoom link for this talk will be provided to you when you register.