Upcoming Talks

In Fall 2025, the UChicago Algebraic Topology Seminar will meet on Tuesdays at 4:00-5:00PM in Eckhart Hall 206 and will be preceded by a pretalk 3:30-4PM (unless otherwise noted).

To receive emails about the seminar, please email Nikolai Konovalov requesting to be subscribed to our mailing list.

• • Nov 112025

  Andrew Senger (University of Maryland)

  Synthetic $E_\infty$-rings

  This talk is 5:00pm-6:00pm. The talk will be at Kent Chem Lab 102

  In this talk, I will introduce the category of synthetic $E_\infty$-rings, a categorification of the even filtration of Hahn-Raksit-Wilson, and discuss some of its basic properties. As an application, I will explain how the category of synthetic $E_\infty$-rings can be used to give the even filtration a universal property as a left adjoint. I will also explain how this technology can be used to further our understanding of the motivic filtration on $THH$.

  This is joint work with Devalapurkar, Hahn, and Raksit.

• • Nov 182025

  TBA

• • Dec 022025

  Alexander Petrov (Clay/MIT)

If you have any questions, please contact Sanath Devalapurkar, Nikolai Konovalov, Akhil Mathew, Tomer Schlank, or Peter May.