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SUMMARY:Affine actions\, cohomology and hyperbolicity - Erik Guentner (Uni
 versity of Hawaii)
DTSTART:20170523T090000Z
DTEND:20170523T100000Z
UID:TALK72756@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Many groups admit an affine action on a Hilbert\, or suitable 
 Banach space which is proper\, or at least has an unbounded orbit. For exa
 mple\, CAT(0) cubical groups act properly on Hilbert space\; and a hyperbo
 lic group acts properly on an Lp-space\, although some cannot act on a Hil
 bert 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 wo
 rk\, joint with Eric Reckwerdt and Romain Tessera\, on the existence of af
 fine actions of relatively hyperbolic groups.  <br><br><br><br>
LOCATION:Seminar Room 2\, Newton Institute
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