Title: A combinatorial spanning tree model for knot Floer homology.
Speaker: John Baldwin
Speaker Info: Princeton
Knot Floer homology is a powerful invariant of knots and links in S^3 which generalizes the Alexander polynomial. I'll describe a new combinatorial method for computing a version of knot Floer homology. Our construction comes from iterating an unoriented skein exact triangle discovered by Manolescu, and yields a chain complex for knot Floer homology which is reminiscent of that of Khovanov homology, but is generated (roughly) by spanning trees of the black graph of the link. This is joint work with Adam Levine.Date: Thursday, May 19, 2011