MIT Infinite Dimensional Algebra Seminar

Friday, September 17, 2021 at 3:00pm to 5:00pm

Building 2, 1-135
182 MEMORIAL DR, Cambridge, MA 02139

Speaker: Milen Yakimov (Northeastern University)

Title: Root of unity quantum cluster algebras: discriminants, Cayley-Hamilton algebras, and Poisson orders

Abstract: We will describe a theory of root of unity quantum cluster algebras, which includes various families of algebras from Lie theory and topology. All such algebras will be shown to be maximal orders in central simple algebras. Inside each of them, we will construct a canonical central subalgebra which is isomorphic to the underlying cluster algebra. It is a far-reaching generalization of the De Concini-Kac-Procesi central subalgebras that play a fundamental role in the representation theory of quantum groups at roots of unity. An explicit formula for the corresponding discriminants will be presented. We will also show that all root of unity quantum cluster algebras have canonical structures of Cayley-Hamilton algebras (in the sense of Procesi) and Poisson orders (in the sense of De Concini-Kac-Procesi and Brown-Gordon). Their fully Azumaya loci will be shown to contain the underlying cluster A varieties. This is a joint work with Shengnan Huang, Thang Le, Bach Nguyen and Kurt Trampel.

Event Type


Events By Interest


Events By Audience


Events By School

School of Science


prob_sem, aldixon


Department of Mathematics


Contact Email

Add to my calendar

Recent Activity

You're not going yet!

This event requires registration.