Universal Triviality of the Chow group of zero-cycles and unramified logarithmic Hodge-Witt cohomology
Speaker: Shusuke Otabe (Tokyo Denki University)

Time: 9h15, Friday, July 30, 2021

Join Zoom Meeting:


Meeting ID: 827 7229 2046

Passcode: 830392

Abstract: Auel–Bigazzi–Bohning–Graf von Bothmer proved that if a proper smooth variety over a field has universally trivial Chow group of zerocycles, then its cohomological Brauer group is trivial as well. Binda–Rulling–Saito recently prove that the same conclusion is true for all reciprocity sheaves. For example, unramified logarithmic Hodge-Witt cohomology has the structure of reciprocity sheaf. In this talk, I will discuss another proof of the triviality of the unramified cohomology, where the key ingredient is a certain kind of moving lemma.

This is a joint work with Wataru Kai and Takao Yamaza.

Trở lại

08/12/22, Hội nghị, hội thảo:
Winter School on Mathematical Models and Dynamical Systems
16/12/22, Bài giảng viện:
Arational blowdown surgery on 4-manifolds
19/12/22, Hội nghị, hội thảo:
Một số vấn đề trong hình học và tô pô
08/08/23, Hội nghị, hội thảo:
Đại hội Toán học Việt Nam lần thứ X

Công bố khoa học mới