A slice genus lower bound from Khovanov-Rozansky homology

Andrew Lobb (Imperial College)

Monday 8th December, 2008 16:00-17:00 Mathematics Building, room 214


Generic perturbations of the Khovanov and Khovanov-Rozansky homologies give rise to good bounds on the smooth slice genus of a knot. We shall discuss this, and show how a simple topological argument can bypass a lot of algebra in proofs of these results.

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