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MaPhySto
The Danish National Research Foundation:
Network in Mathematical Physics and Stochastics



Funded by The Danish National Research Foundation
Geometric Mathematical Physics Seminar
Tuesday, 2 November 2004, at 9:15 in A4
Christian Blanchet
Université de Bretagne-Sud, France
Ribbon categories from Homfly skein theory

Abstract
The Homfly invariant of a link is a two variable polynomial with specializations corresponding to the so-called SU(N) quantum invariant. We will present the corresponding skein theory, and construct a semisimple ribbon category out of it. The key point here is the structure of Hecke algebras.
This lecture is part of the course "TQFT and Knot theory".

Contact person:Jørgen Ellegaard Andersen.