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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
Wednesday, 5 May 2004, at 16:15 in D3
David Cimasoni
Université de Dijon et Genève
Generalized Seifert surfaces for colored links

Abstract
The Seifert surface is a well-known and very useful tool in link theory. For instance, it permits to study the Alexander invariants, the Conway polynomial, and the signature of an oriented link. In this talk, we shall introduce 'generalized Seifert surfaces' for colored links. They provide a geometric interpretation of the multivariable Alexander invariants and the Conway potential function. They also make it possible to define a multivariable signature that generalizes the Levine-Tristarm signature.

Contact person:Jørgen Ellegaard Andersen.