Date: Wednesday, November 01, 2017
Location: 4096 East Hall (4:10 PM to 5:30 PM)
Title: Etale morphisms and local algebraic fundamental groups
Abstract: Suppose that X is a normal noetherian scheme. We consider local obstructions to the map on etale fundamental groups pi_1(X^{reg}) > pi_1(X) being an isomorphism. Assuming X has a regular alteration, we prove that these obstructions are finite if and only if X has a finite Galois cover that is etale over the regular locus, where the corresponding map on fundamental groups is an isomorphism.
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Speaker: Charlie Stibitz
Institution: Princeton University
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