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Department of Mathematics Seminars and Talks

 
Events at Fields login
Seminar

Geometry and Physics Seminar

Talk Information
Title
McNamara-Wang Reconstruction

by Theo Johnson--Freyd (Perimeter Institute)

Start date and time
14:10 on Monday May 25, 2026
Duration in minutes
110 (until 16:00 on Monday May 25, 2026)
Room
Stewart Library, Fields Institute, 222 College St.
Streaming link
Streaming password
External video link
Talk link
https://seminars.math.toronto.edu/pages/seminars?case=view_talk&talk_id=1779732600-1779207419-130
Abstract

I will say some words about nonunital categories, and tell you an awesome new theorem of McNamara and Wang: unitary QFTs are determined by their partition functions.

Speaker Information
Full Name
Theo Johnson--Freyd
Personal website
https://categorified.net/
Institution
Perimeter Institute
Institution URL
https://perimeterinstitute.ca/people/theo-johnson-freyd
Department of Mathematics, University of Toronto