Hacettepe Üniversitesi Matematik Bölümü Seminerleri
Kauffman brackets on surfaces
Francis Bonahon
University of Southern Califonia, Amerika Birleşik Devletleri
The classical Kauffman bracket is an invariant of knots in space, closely related to the famous Jones polynomial. Witten's interpretation of the Jones polynomial as a special case of a topological quantum field theory leads to a generalization of Kauffman brackets to knots drawn on a surface. I will discuss properties of these generalized Kauffman brackets. This is joint work with Helen Wong.
