#### ** Upcoming Talk**

##

**May 15, 2019 (Wed.)**** 11:00-12:30**

Sasha Minets (IST Austria)

Venue: Room 201, Astro-Math. Building

Title:Cohomological Hall algebras and sheaves on surfaces

**Abstract:**

**I will start with a quick survey of classical and
cohomological Hall algebras. For that, I will recall how combinatorics
of the Hilbert scheme of points on a plane are governed by the action of
elliptic Hall algebra. In the second part of the talk, I will explain
how certain aspects of this story can be generalized to the moduli
spaces of sheaves on other surfaces, such as cotangent bundle to a curve.
**