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The University of Southampton
Mathematical Sciences

Pure Maths Colloquium - Affine actions, cohomology and hyperbolicity - Erik Guentner (Hawaii) Seminar

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Time:
15:00 - 16:00
Date:
19 May 2017
Venue:
54/10B

For more information regarding this seminar, please telephone Jan Spakula on 23137 or email jan.spakula@soton.ac.uk .

Event details

Abstract: Many groups admit an affine action on a Hilbert, or suitable Banach space which is proper, or at least has an unbounded orbit. For example, CAT(0) cubical groups act properly on Hilbert space; and a hyperbolic group acts properly on an Lp-space, although some cannot act on a Hilbert space with an unbounded orbit (or even without a global fixed point). In the talk I will describe these results and will discuss some recent work, joint with Eric Reckwerdt and Romain Tessera, on the existence of affine actions of relatively hyperbolic groups.

Speaker information

Erik Guentner, University of Hawaii. Professor at University of Hawaii at Manoa

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