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SUMMARY:Johan Asplund
DTSTART:20210615T140000Z
DTEND:20210615T150000Z
DTSTAMP:20260423T021301Z
UID:Freemath/55
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Freemath/55/
 ">Chekanov-Eliashberg dg-algebras for singular Legendrians</a>\nby Johan A
 splund as part of Free Mathematics Seminar\n\n\nAbstract\nThe Chekanov-Eli
 ashberg dg-algebra is a holomorphic curve invariant associated to a Legend
 rian submanifold of a contact manifold. In this talk we explain how to ext
 end the definition to singular Legendrian submanifolds admitting a Weinste
 in neighborhood. Via the Bourgeois-Ekholm-Eliashberg surgery formula\, the
  new definition gives direct geometric proof of the pushout diagrams and s
 top removal formulas in partially wrapped Floer cohomology of Ganatra-Pard
 on-Shende. It furthermore leads to a proof of the conjectured surgery form
 ula relating partially wrapped Floer cohomology to Chekanov--Eliashberg dg
 -algebras with coefficients in chains on the based loop space. This talk i
 s based on joint work with Tobias Ekholm.\n
LOCATION:https://researchseminars.org/talk/Freemath/55/
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