Department of Mathematics

Geometry and Topology

  •  Lev Tovstopyat-Nelip, MSU
  •  Obstructing Lagrangian link cobordisms via Heegaard Floer homology.
  •  10/24/2019
  •  2:00 PM - 3:00 PM
  •  C304 Wells Hall

I'll explain how an invariant of Legendrian links in knot Floer homology can be used to obstruct the existence of decomposable Lagrangian link cobordisms in a very general setting. The argument involves braiding the ends of the cobordism about open books and appealing to an algebraic property of the Legendrian invariant called comultiplication. Much of the talk will be spent describing the topological and contact geometric ingredients.



Department of Mathematics
Michigan State University
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C212 Wells Hall
East Lansing, MI 48824

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College of Natural Science