Speaker:	Gufang Zhao (The University of Melbourne)
Title:	Cohomological Hall algebras and their representation theory
Date (JST):	Fri, Jan 10, 2020, 13:15 - 14:45
Place:	Seminar Room B
Blackboard:	(Blackboard talk)
Abstract:	Cohomological Hall algebras (COHA) of a quiver with a superpotential is introduced by Kontsevich and Soibelman in the context of refined Donaldson-Thomas invariants. In this talk, I will focus on several examples of the representations of COHA, on cohomology of moduli of sheaves on a toric Calabi-Yau 3-fold, and on versions of quiver varieties. I will mention some applications in representation theory, including a construction of generalized quantum Frobenius maps, and constructions of generalized affine Schubert varieties.

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