© | << < ? > >> | Dror Bar-Natan: Talks:

Khovanov Homology for Tangles and Cobordisms

Topology Seminar, University of Rochester, April 4, 2004

Abstract. In my talk I will display one complicated picture and discuss it at length. Applying a certain 2D TQFT, we will get a homology theory whose Euler characteristic is the Jones polynomial. Not applying it, very cheaply we will get an invariant of tangles which is functorial under cobordisms and an invariant of 2-knots.

Why is it interesting?

Handout side 1: NewHandout-1.pdf.
Handout side 2: handout2.pdf.

The Picture:

The Main Picture