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Event Detail

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 Seminar
    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.