On the categorification of the quantum Casimir

Geometry Topology Seminar
Monday, April 26, 2010 - 15:00
1 hour (actually 50 minutes)
Skiles 269
University of Zurich
In the talk, I will gently introduce the Lauda-Khovanov 2-category, categorifying  the idempotent form of the quantum sl(2). Then I will define a complex, whose Euler characteristic is the quantum Casimir.  Finally, I will show that this complex naturally belongs to the center of the 2-category. The talk is based on the joint work with Aaron Lauda and Mikhail Khovanov.