| Description |
Abstract: In the first part of the talk, I will give a brief introduction to the theory of 2d cohomological Hall algebras (COHAs), focusing on the example of COHAs of zero-dimensional sheaves on smooth surfaces. Additionally, I will describe certain geometric representations of these COHAs and introduce Nakajima type operators. In the second part of the talk, I will discuss a generalization and categorification of this framework. |
TRINO-ALGEBRAIC GEOMETRY SEMINAR: Cohomological Hall algebras, their representations, and Nakajima operators
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