Algebraic Stacks lecture series
Tuesday, 20 February, 11:30 AM
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Venue: Room 113
Host: Sudarshan Gurjar
Speaker: Nitin Nitsure
Affiliation: Bhaskaracharya Pratishthana
Title: Separated and proper morphisms for algebraic stacks
Abstract: This talk is devoted to the generalization of algebraic stacks of the theory of separated and proper morphisms for schemes. We will begin by recalling the relevant basics of algebraic spaces and of algebraic stacks, and their morphisms, illustrated with elementary examples. This will be followed by a description of specializations of points on algebraic stacks, which is the background needed for the valuative criteria for universal closedness and separateness.