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Penn Mathematics Colloquium

Wednesday, February 8, 2023 - 3:45pm

Sylvain Cappell

New York University


University of Pennsylvania


Tea will be served at the math lounge at 3:00 pm

We consider in various settings what spaces can be the fixed points sets of which finite groups acting on what spaces. In some settings the answers depend only upon such elementary invariants as Euler characteristics, even for non-simply connected spaces. 
This is part of a series of joint projects with Shmuel Weinberger of the U. of Chicago and Min Yan of Hong Kong U. of Science and Tech.