Planned seminars

Europe/Lisbon Unusual schedule

Cris Negron
, University of Southern California

I will discuss joint work with Agustina Czenky. We introduce a $(3-ε)$-dimensional TQFTs which is generated, in some sense, by the derived category of quantum group representations. This TQFT is valued in the $∞$-category of dg vector spaces, and the value on a genus $g$ surface is a $g$-th iterate of the Hochschild cohomology for the aforementioned category. I will explain how this TQFT arises as a derived variant of the usual Reshetikhin–Turaev theory and, if time allows, I will discuss the possibility of introducing local systems into the theory. Our interest in local systems comes from proposed relationships with 4-dimensional non-topological QFT.

Europe/Lisbon Unusual schedule

Joshua Sussan
, Medgar Evers College, The City University of New York

We construct an action of sl(2) on equivariant Khovanov–Rozansky link homology. We will discuss some topological applications and show how the construction simplifies in characteristic p. This is joint with You Qi, Louis-Hadrien Robert, and Emmanuel Wagner.

Europe/Lisbon

Rhea Palak Bakshi
, University of California, Santa Barbara

To be announced

Europe/Lisbon

Harshit Yadav
, University of Alberta

To be announced