"The M-theory index". Speaker: Andrei Okounkov

Location: Old Geology, Theatre 1
I will report on a joint work in progress with Nikita Nekrasov.
Our goal is to define the M-theory index for manifolds that
fiber in a 5-dimensional (complex) Calabi-Yau variety X over
a circle. After an introduction to the problem, I will explain
how much progress we made so far and how this problem
is related to the Donaldson-Thomas theory of threefolds.