Geometry/Physics Seminar

Title: Legendrian Knot Categories and BPS spaces
Speaker: Eric Zaslow
Speaker Info: Northwestern University
Brief Description:
Special Note:

Given a Legendrian knot in R^3 or R^3/Z we construct a dg category via constructible sheaves and show invariance under Legendrian isotopies. In the case of positive braid closures, the spaces of objects of fixed rank are interesting BPS moduli spaces related to local systems on a Seifert surface. From these spaces one can construct the homological HOMFLY invariant of the knot, as in the work of Webster-Williamson.

This work is joint with Vivek Shende and David Treumann.

Date: Tuesday, June 04, 2013
Time: 4:00pm
Where: Lunt 107
Contact Person: Philsang Yoo
Contact email: philsang@math.northwestern.edu
Contact Phone:
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