Geometric Representation Theory Seminar
Wednesday, November 13, 2019 at 3:00pm to 4:00pm
Building 2, 2-449
182 MEMORIAL DR, Cambridge, MA 02139
Thomas Lam (Michigan/MIT)
Cohomology of cluster varieties
Abstract: I will talk about joint work with David Speyer where we
study the singular cohomology of cluster varieties, and in particular about the "curious Lefschetz duality" that these cohomology rings satisfy. There are relations to the study of higher extension groups of Verma modules in the principal block of Category O, and to the study of rational q,t-Catalan polynomials.