For more information about this meeting, contact Calder Daenzer, Mathieu Stienon, Mari Royer, Nigel Higson, Ping Xu.
| Title: | Groupoid crossed-modules and cohomology |
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| Seminar: | GAP Seminar |
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| Speaker: | Jean-Louis Tu, Universite de Lorraine, Metz |
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| Abstract: |
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| 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 |
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| Date: | 08 / 27 / 2013 |
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| Time: | 02:30pm - 03:30pm |
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