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SUMMARY:Negative curvature and rigidity for von Neumann algebras - Stefaan
  Vaes (KU Leuven)
DTSTART:20170509T150000Z
DTEND:20170509T160000Z
UID:TALK72402@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Popa&#39\;s deformation/rigidity theory led to numerous classi
 fication and structure theorems for von Neumann algebras coming from group
 s and their actions on measure spaces. Negative curvature phenomena like h
 yperbolicity have played a key role in several of these results. I will fi
 rst give an introduction to von Neumann algebras and then present a number
  of rigidity theorems\, highlighting the usage of negative curvature type 
 concepts.<br>
LOCATION:Seminar Room 1\, Newton Institute
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