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Algebraic Geometry Seminar

Monday, April 28, 2025 - 3:30pm

Matthew Satriano

University of Waterloo

Location

University of Pennsylvania

DRL 4N30

Crepant resolutions have inspired connections between birational geometry, derived categories, representation theory, and motivic integration. In this talk, we give a new characterization of log terminal singularities in term of crepant resolutions by stacks. We additionally prove a motivic McKay correspondence, giving the first known description for stringy Hodge numbers in terms of motivically integrating a function that takes only finitely many values. No prior knowledge of stacks will be assumed. This is joint work with Jeremy Usatine.

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