Quantum Topology / Hopf Algebra Seminar
Louis Kauffman
UIC
Khovanov Homology and Lee Homology
Abstract: Lee homology is a variant of Khovanov homology, using a different Frobenius algebra. We will review how this
structure comes about and show how to calculate Lee homology. We then explain how Lee homology and Khovanov
homology combine to give information about the 4-ball genus of some knots (Rasmussen invariant).
Tuesday May 23, 2017 at 3:00 PM in SEO 612