Organizers: Prof. Michael McBREEN, Omega Tong and Anson Law.
Description: The goal of this seminar is to go through the book Quantum Groups and Quantum Cohomology by Davesh Maulik and Andrei Okounkov. This book proves a famous conjecture about supersymmetric gauge theory (The Alday-Gaiotto Tachikawa conjecture) using an action of a quantum group (the Yangian) on the cohomology of quiver varieties. Stable envelopes are introduced in order to define this Yangian action. It turns out they are also useful in many other circumstances.
Time and location: Thursday 1:30–2:30 pm HKT, AB1 502a.