# Mathematical Sciences Research Institute

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1. # HC Seminar - Operadic Category Theory: TBA

Location: MSRI: Baker Board Room
Speakers: Muriel Livernet (Institut de Mathematiques de Jussieu)
Updated on Feb 21, 2020 09:08 AM PST
2. # (∞,2)-categories: (Op)lax natural transformations of (∞,n)-categories

Location: MSRI: Simons Auditorium
Speakers: Claudia Scheimbauer (TU München)

I will explain a definition of (op)lax natural transformations for (∞,n)-categories using the model of (complete) n-fold Segal spaces. The main step in the construction is to define a family of strict n-categories (more precisely, computads), which should be thought of as what one would expect to be a Gray tensor product of the walking l-fold compositions of k-morphisms. I will explain some immediate consequences of our definitions and focus on (pictures of) low-dimensional cases. The motivation for this project was to define twisted field theories’’, related to relative field theories, as suggested in work by Stolz-Teichner and Freed-Teleman. If requested by the audience, I will explain briefly what I mean by this. This was joint work with Theo Johnson-Freyd.

Updated on Feb 20, 2020 11:46 AM PST
3. # HC&QS - Joint Newcomers Seminar: Classification of Super-modular Categories & Real topological cyclic homology via the parametrized Tate construction

Location: MSRI: Simons Auditorium
Speakers: Jay Shah (University of Notre Dame), Qing Zhang (Zhongshan University)
Updated on Feb 20, 2020 02:55 PM PST