University of Minnesota Combinatorics Seminar
Spring 2008
February 19, 4:30-5:30pm
570 Vincent Hall



A combinatorial model for representations of rational Cherednik algebras

Stephen Griffeth

University of Minnesota


Abstract

The rational Cherednik algebra of a complex reflection group is a certain algebra with triangular decomposition, whose corresponding "category O" has irreducible modules in bijection with the irreducible modules for the underlying group. Fundamental questions about the structure of these irreducible modules include:

  • When are they finite dimensional?
  • How do they decompose as modules for the group?

We propose a combinatorial model for answering these questions for the infinite series G(r,p,n) of complex reflection groups. In this talk we will focus on the case of the groups G(r,1,2), where the drawings are easier to understand but the results are quite typical.