Subfactors, groups and a new planar algebra,   Dr. Dietmar Bisch,   Vanderbilt University,  Fri, 20 February, 2009,   9:30 a.m. C-236


Starting from two finite groups (and a cocycle), Haagerup and I introduced some 10 years ago a very simple mechanism to construct classes of irreducible subfactors with exotic standard invariants. We will review this construction and describe the planar algebras arising from it (joint work with Das and Ghosh). We will also explain what a planar algebra is as we go along.