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【学术报告】Etale cohomology and the characteristic cycle

时 间:2019-09-06  15:00-16:00


报告人:Prof. Takeshi Saito(University of Tokyo)


地 点:Room 77201, Jingchunyuan 78, BICMR


Abstract: Etale cohomology was introduced by Grothendieck in 1960's as a good cohomology theory that eventually enables to prove the Weil conjectures on the zeta functions of varieties over finite fields.
Taking the theory of D-modules as a model, the singular support and the characteristic cycle of an l-adic sheaf on a variety are defined recently on the cotangent bundle of the variety.
I will briefly explain the theory of characteristic cycle.

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