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Nearby cycles over general bases

Hot Topics: Recent progress in Langlands Program April 08, 2019 - April 12, 2019

April 11, 2019 (03:30 PM PDT - 04:30 PM PDT)
Speaker(s): Weizhe Zheng (Academy of Mathematics and Systems Science; Princeton University)
Location: SLMath: Eisenbud Auditorium
  • nearby cycles

  • vanishing topos

Primary Mathematics Subject Classification
Secondary Mathematics Subject Classification No Secondary AMS MSC



The goal of this talk is to introduce Deligne's theory of nearby cycles over general bases as used in the work of Genestier and V. Lafforgue. In particular, we will present Orgogozo's theorem that these nearby cycles become good after modification of the base.

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