Speaker(s) | Lukas Lewark Universität Bern |
Date | 27 June 2017 – 13:30 to 14:30 |
Venue | INI Seminar Room 1 |
Session Title | An Upsilon-like invariant from Khovanov-Rozansky homology |
Event | [HTLW04] Quantum topology and categorified representation theory |
Abstract | Co-author: Andrew Lobb (Durham University) Khovanov-Rozansky homology in its most general form (so-called equivariant homology) associates to a knot a chain complex (invariant up to homotopy equivalence) over a certain polynomial ring. Equivariant homology yields various lower bounds to the slice genus, some of them concordance homomorphisms, some not; and also a piecewise linear function which has much resemblance with the recently introduced Upsilon-invariant from Heegaard-Floer homology. |