You are cordially invited to the Topology Seminar organized by the Department of Mathematics.
Speaker: Thomas Jan Mikhail (University of Copenhagen)
“Abacus bicomodule configurations and the Bergner–Osorno–Ozornova–Rovelli–Scheimbauer equivalence”
Abstract: A theorem of Bergner, Osorno, Ozornova, Rovelli, and Scheimbauer states an equivalence between 2-Segal spaces and certain augmented stable double Segal spaces. In this talk, after a preliminary section on 2-Segal spaces, I will establish more general equivalences, involving simplicial maps of 2-Segal spaces and abacus bicomodule configurations, extending results of Carlier. This talk is based on joint work with Joachim Kock, and a preprint of this work is available on the arXiv (see arXiv:2501.16491).
Date: July 7, Monday, 2025
Time: 13:30 UTC+3
Place: ZOOM
To request the event link, please send a message to cihan.okay@bilkent.edu.tr