Special Seminar
Thu Apr 18, 2024 2:00–3:00 PM
Location
Building 2, 449
Description
Speaker: Francesco Sala (University of Pisa)Title: Cohomological Hall algebras and their representations versus Nakajima operatorsAbstract: 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.
- Special SeminarSpeaker: Francesco Sala (University of Pisa)Title: Cohomological Hall algebras and their representations versus Nakajima operatorsAbstract: 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.