Talk
Categorification
- Kishore Marathe (The City University of New York & MPI MiS, Leipzig)
Abstract
The concept of categorification is quite old. It refers to the fine resolution of global invariants, usually by suitable (co)homologies. It has been revived recently with a spate of new invariants of low dimensional manifolds with close connections to physical field theories. We will discuss some examples of this for invariants of three-manifolds with or without links, such as the Casson invariant and the Jones polynomial.
