Thursday, November 2, 2023 4:30 pm
-
5:30 pm
EDT (GMT -04:00)
Chris Schafhauser, University of Nebraska-Lincoln
"Finite dimensional approximations of groups"
Blackadar and Kirchberg introduced the class of matricial field C*-algebras, which are those which approximately embed into finite dimensional matrix algebras. Specializing this property to group C*-algebras, one defies a group to be MF if it admits approximate finite dimensional representations which are approximately faithful and and approximately weakly contained in the left regular representation. I will give a survey of known examples and properties of MF groups, including a recent result showing that free products of amenable groups amalgamated over a common normal subgroup are MF.
This seminar will be held both online and in person:
- Room: MC 5479
- Zoom link: https://uwaterloo.zoom.us/j/94186354814?pwd=NGpLM3B4eWNZckd1aTROcmRreW96QT09