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SUMMARY:Egor Shelukhin (University of Montreal)
DTSTART:20211103T141000Z
DTEND:20211103T153000Z
DTSTAMP:20260423T004756Z
UID:GDS/39
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GDS/39/">Ham
 iltonian no-torsion</a>\nby Egor Shelukhin (University of Montreal) as par
 t of Geometry and Dynamics seminar\n\n\nAbstract\nWe generalize in several
  ways Polterovich's well-known theorem that the \nHamiltonian group of a c
 losed symplectically aspherical manifold admits \nno non-trivial elements 
 of finite order. We prove an analogous statement \nfor Calabi-Yau and nega
 tively monotone manifolds. For positively monotone \nmanifolds we prove th
 at non-trivial torsion implies geometric uniruledness \nof the manifold\, 
 answering a question of McDuff-Salamon. Moreover\, in this \ncase the foll
 owing symplectic Newman theorem holds: a small Hofer-ball \naround the ide
 ntity contains no finite subgroup. This is joint work with \nMarcelo Atall
 ah.\n
LOCATION:https://researchseminars.org/talk/GDS/39/
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