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SUMMARY:Nick Sheridan (University of Edinburgh)
DTSTART:20250311T150000Z
DTEND:20250311T160000Z
DTSTAMP:20260423T022712Z
UID:Geolis/163
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Geolis/163/"
 >Quantum cohomology as a deformation of symplectic cohomology</a>\nby Nick
  Sheridan (University of Edinburgh) as part of Geometria em Lisboa (IST)\n
 \n\nAbstract\nWhen M is a Fano variety and D is an anticanonical divisor i
 n M\, mirror symmetry suggests that the quantum cohomology of M should be 
 a deformation of the symplectic cohomology of M \\ D. We prove that this h
 olds under even weaker hypotheses on D (although not in general)\, and exp
 lain the consequences for mirror symmetry. We also explain how our methods
  give rise to interesting symplectic rigidity results for subsets of M. Al
 ong the way we hope to give a brief introduction to Varolgunes' `relative 
 symplectic cohomology'\, which is the key technical tool used to prove our
  symplectic rigidity results\, but which is of far broader significance in
  symplectic topology and mirror symmetry as it makes the computation of qu
 antum cohomology `local'. This is joint work with Strom Borman\, Mohamed E
 l Alami\, and Umut Varolgunes.\n
LOCATION:https://researchseminars.org/talk/Geolis/163/
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