# 東京理科大学理工学部 数学科

seminar:2021:04

### 第4回 大橋久範 氏

• 講演者 : 大橋久範 氏（東京理科大学）
• 題目 : Finite groups of symplectic automorphisms of the supersingular $K3$ surface in characteristic $p$
• 日時 : 2021年 7月 21日 (Wed) 16:30 〜 17:30
• 場所 : 講義棟 K403教室（ハイブリッド開催）

#### abstract

Finite groups of symplectic automorphisms of $K3$ surfaces were first studied by Nikulin (1980), classified by Mukai (1988) relating to the sporadic Mathieu groups in characteristic 0, and extended by Dolgachev-Keum (2009) to positive characteristic in (mainly) the tame case. Based on a joint work with Professor M. Schuett (Leibniz university of Hannover), we will give a partial extension/refinement of these results. In particular, we will obtain a full statement in the special case in the title.

seminar/2021/04.txt · 最終更新: 2021/07/23 10:49 by wikiadm