Topology Seminar

Title: Categorified invariants and the Artin braid group
Speaker: Eli Grigsby
Speaker Info: Boston College
Brief Description:
Special Note:

I will describe a "categorified" combinatorial braid conjugacy class invariant arising naturally from Khovanov's homology theory for links in S^3 and prove it is strong enough to detect the trivial braid conjugacy class. Time permitting, I will mention a conjectural relationship between this invariant and a categorification of the U_q(sl_2) Reshetikhin-Turaev braid invariant due to Chen-Khovanov and Brundan-Stroppel. I will also explain what I mean by a "categorified" invariant and why low-dimensional topologists care about them. Parts of this talk describes joint work with D. Auroux and S. Wehrli, and other parts describe joint work with J. Baldwin.
Date: Monday, May 6, 2013
Time: 4:10pm
Where: Lunt 104
Contact Person: Prof. Paul Goerss
Contact email: pgoerss@math.northwestern.edu
Contact Phone: 847-491-8544
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