中科院数学与系统科学研究院
数学研究所
学术报告会
报告人： Luc Illusie (Université Paris-Sud )
题 目：On vanishing cycles and duality, after A. Beilinson
时 间：2016.11.03（星期四），10:00-12:00
地 点：南楼820
Abstract:
It was proved by Gabber in the early 1980's that $R\Psi$ commutes with duality, and that $R\Phi$ preserves perversity up to shift. It had been in the folklore since then that this last result was in fact a consequence of a finer one, namely the compatibility of $R\Phi$ with duality. In this talk I'll give a proof of this, using a method explained to me by A. Beilinson.