Seminar
Bimodules, planarity and freeness, Dr. Dietmar Bisch, Vanderbilt University, China, , 19 February, 2009, 10:00 a.m. C-356
Abstract
Symmetries of von Neumann algebras are naturally
captured by certain bimodules. They form fusion categories
whose intertwiner spaces carry an action of Jones' planar operad.
This gives rise to many suprising algebraic-combinatorial
structures, including a new notion of free product that Vaughan
Jones and I discovered in recent joint work.
I will explain these concepts and present some examples. The talk
will be accessible to graduate students and non-experts.