Spherical Varieties and Combinatorics
Mahir Can (Tulane University)
Abstract: Let G be a reductive complex algebraic group with a Borel subgroup B. A spherical G-variety is an irreducible normal G-variety X where B has an open orbit. If X is affine, or if it is projective but endowed with a G-linearized ample line bundle, then the group action criteria for the sphericality is in fact equivalent to the representation theoretic statement that a certain space of functions (related to X) is multiplicity-free as a G-module. In this talk, we will discuss the following question about a class of spherical varieties: if X is a Schubert variety for G, then when do we know that X is a spherical L-variety, where L is the stabilizer of X in G.
combinatoricsquantum algebrarings and algebrasrepresentation theory
Audience: researchers in the topic
OIST representation theory seminar
Series comments: Timings of this seminar may vary from week to week.
Organizer: | Liron Speyer* |
*contact for this listing |