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SUMMARY:Jordan property for diffeomorphism groups - Ignasi Mundet i Riera\
 , Barcelona
DTSTART:20190206T160000Z
DTEND:20190206T170000Z
UID:TALK115252@talks.cam.ac.uk
CONTACT:Ivan Smith
DESCRIPTION:A group G is Jordan if there exists a constant C such that\nan
 y finite subgroup of G has an abelian subgroup of index at most C.\nFor ex
 ample\, GL(n\,R) is Jordan for every n. Some 30 years ago E. Ghys\nasked w
 hether diffeomorphism groups of closed manifolds are Jordan.\nA number of 
 papers have been written on this question in the past few \nyears. It is k
 nown that there are lots of manifolds whose\ndiffeomorphism group is Jorda
 n\, and also lots of manifolds for which\nit is not. However\, Ghys's ques
 tion is far from being completely\nunderstood\, and many basic and interes
 ting problems related to it\nremain open.\n\nIn this talk I will survey th
 e recent developments and some of the \nopen questions about Jordan proper
 ty for diffeomorphism groups.
LOCATION:MR13
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