# Mathematics Colloquia and Seminars

### K-theoretic Hall algebra of a surface and Feigin-Odesskii wheel conditions

Algebra & Discrete Mathematics

 Speaker: Yu Zhao, MIT Related Webpage: https://math.mit.edu/directory/profile.php?pid=1736 Location: 1147 MSB Start time: Mon, Oct 14 2019, 12:10PM

In this talk, we will discuss the K-theoretic Hall algebra of a surface, which generalizes the
Grojnowski's and Nakajima's description of the cohomology of Hilbert schemes of points on
surfaces. We will also discuss a wheel condition for the shuffle presentation of K-theoretic
Hall algebra, which originated from Feigin and Odesskii.