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SUMMARY:Vincent Humilière (Sorbonne University)
DTSTART:20210106T121000Z
DTEND:20210106T133000Z
DTSTAMP:20260423T004823Z
UID:GDS/22
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GDS/22/">Is 
 the group of compactly supported area preserving homeomorphisms of the 2-d
 isk simple?</a>\nby Vincent Humilière (Sorbonne University) as part of Ge
 ometry and Dynamics seminar\n\n\nAbstract\nThis long standing open problem
  has been recently solved in joint work \nwith Dan Cristofaro-Gardiner and
  Sobhan Seyfaddini. I will present some \nbackground and the main ideas th
 at lead to the proof. It is based on \ntools from symplectic topology and 
 more precisely on a theory due to \nHutchings\, called Periodic Floer Homo
 logy.\n
LOCATION:https://researchseminars.org/talk/GDS/22/
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