Seminar by Paul Wedrich (University of Cambridge)

Title: Deformations of link homologies

2014.10.30 | Jane Jamshidi

Date Wed 14 Jan
Time 16:15 17:15
Location Aud-D3 (1531-215)

Abstract: I will start by explaining how deformations help to answer two important questions about the family of (colored) sl(N) link homology theories: What relations exist between them? What geometric information about links do they contain? I will recall Bar-Natan and Morrison's version of Lee's deformation of Khovanov homology and sketch how it generalizes to the case of colored sl(N) link homology. Finally, I will state a decomposition theorem for deformed colored sl(N) link homologies which leads to new spectral sequences between various type A link homologies and concordance invariants in the spirit of Rasmussen's s-invariant. Joint work with David Rose.