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1-2-3 Seminar: Many Spheres in the Join of Paths

Yirong Yang, University of Washington
Friday, February 24, 2023 - 2:30pm to 3:20pm
PDL C-401

How many combinatorially distinct n-vertex triangulations of a d-dimensional sphere are there? In this talk, we will have a crash course in simplicial complex, going through basic definitions and tools, and use them to build A LOT OF spheres (a construction due to Nevo, Santos, and Wilson) to achieve the currently known best lower bound for the case when d is odd!

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