PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Nigel Higson, John Roe, Ping Xu, Mathieu Stienon.

Title:New C*-completions of discrete group algebras and dynamical systems. Part 2
Seminar:Noncommutative Geometry Seminar
Speaker:Nate Brown, Penn State
Abstract:
Given a group G, there are two common C*-completions of the group algebra: the reduced and full. But there are many other canonical completions determined by "rates of decay" of matrix coefficients. In joint work with Erik Guentner we've started to study these other completions and the results look promising. So far, we've found the first C*-characterization of a-T-menability, given new examples of "exotic" quantum groups, and substantially simplified and generalized a recent theorem of Ron Douglas and Piotr Nowak.

Room Reservation Information

Room Number:MB106
Date:02 / 17 / 2011
Time:02:30pm - 03:30pm