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Andrei Okounkov, The Index Vertex

Weekly Talk: Andrei Okounkov, "The Index Vertex"

Title: The Index Vertex
Speaker: Andrei Okounkov
Date: Tuesday, April 17, 2012
Time: 1:00pm – 2:00pm
Place: Lecture Hall 102, Simons Center






The talk will be about the index of the Dirac operator for the moduli spaces of instantons in 6 real (or, rather, 3 complex) dimensions. I will explain: 1) why is one interested in defining and computing such object, 2) how can it be defined, 3) how can it be computed, 4) how this computation generalizes the refined vertex of Iqbal, Kozcaz, and Vafa.

This is joint work with Nikita Nekrasov.