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The Khovanov-Rozansky concordance invariants

Lukas Lewark
(Durham University)
Seminar
Onsdag, 8 januar, 2014, at 15:15-16:15, in Aud. D3 (1531-215)
Abstrakt:

The Khovanov-Rozansky homologies induce a family of knot concordance

invariants (among them the Rasmussen invariant) which give strong lower

bounds to the slice genus, and can distinguish between smooth and topological concordance.

After some introduction, we will prove linear independence of some of those concordance invariants,

using amongst others various spectral sequences that relate the different Khovanov-Rozansky homologies.

Kontaktperson: Jørgen Ellegaard Andersen