PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Mathieu Stienon, Mari Royer, Nigel Higson, Ping Xu.

Title:Groupoid crossed-modules and cohomology
Seminar:GAP Seminar
Speaker:Jean-Louis Tu, Universite de Lorraine, Metz
Abstract:
It is well-known that bundle gerbes on a manifold, possibly endowed with an action of a Lie group, can be defined in terms of central extensions of Lie groupoids, which are classified by a second cohomology group. In this talk, we will explain the analogue for bundle 2-gerbes, and see how the language of groupoids can conveniently explain the existence of a product in equivariant twisted K-theory.

Room Reservation Information

Room Number:MB106
Date:08 / 27 / 2013
Time:02:30pm - 03:30pm