Algebraic Geometry Seminar

Seminar information archive ～09/27｜Next seminar｜Future seminars 09/28～

Date, time & place Tuesday 10:30 - 11:30 or 12:00 ハイブリッド開催/002Room #ハイブリッド開催/002 (Graduate School of Math. Sci. Bldg.)

Future seminars

2022/10/05

13:00-14:00   Room #056 (Graduate School of Math. Sci. Bldg.)
Yuri Tschinkel (Mathematics and Physical Sciences Division, Simons Foundation/ Courant Institute, New York University)
Equivariant birational geometry (joint with A. Kresch) (English)
[ Abstract ]
Ideas from motivic integration led to the introduction of new invariants in equivariant birational geometry, the study of actions of finite groups on algebraic varieties, up to equivariant birational transformations.
These invariants allow us to distinguish actions in many new cases, shedding light on the structure of the Cremona group. The structure of the invariants themselves is also interesting: there are unexpected connections to modular curves and cohomology of arithmetic groups.

2022/11/22

10:30-12:00   Room #002 (Graduate School of Math. Sci. Bldg.)
Sho Tanimoto (Nagoya)
TBA (日本語)
[ Abstract ]
TBA

2023/01/10

10:30-11:30/12:00   Room #002 (Graduate School of Math. Sci. Bldg.)
Akihiro Higashitani (Osaka/Dept. of Inf. )
TBA (日本語)
[ Abstract ]
TBA