Семинары: O. Benoist, Two coniveau filtrations

СЕМИНАРЫ


Семинар по арифметической геометрии 11 мая 2020 г. 16:00, г. Москва, платформа ZOOM, идентификатор конференции 820 0825 8131, пароль: 007500

Two coniveau filtrations O. Benoist
Аннотация: A class in the cohomology of a smooth $n$-dimensional variety has coniveau $\ge c$ if it vanishes in the complement of a subvariety of dimension $n-c$, and has strong coniveau $\ge c$ if it comes by proper pushforward from the cohomology of a smooth variety of dimension $n-c$. I will present examples showing that these two filtrations differ in general, both for integral classes on smooth projective varieties and for rational classes on smooth open varieties. This is joint work with John Ottem. (Идентификатор конференции на платформе ZOOM 820 0825 8131, пароль: 007500.)