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Generalized cluster structures and periodic difference operators

Algebraic Geometry

Speaker: Michael Gekhtman, University of Notre Dame
Related Webpage: https://math.nd.edu/people/faculty/michael-gekhtman/
Location: 2112 MSB
Start time: Wed, Apr 13 2022, 11:00AM

I will present a construction that ties together of several diverse notions including spaces of periodic difference operators, Poisson submanifolds of a Drinfeld double of GL(n) and subsets of Grassmannians stable under the action of powers of a cyclic shift. The theory of generalized cluster algebras serves as a unifying theme. Time permitting, I will discuss potential applications to representation theory of quantum affine algebras at roots of unity.

Based on a joint work with M. Shapiro and A. Vainshtein and an ongoing project with C. Fraser and K. Trampel.