Symplectic singularities in algebraic geometry

：Yoshinori Namikawa（日本京都大学数理解析研究所）
：2023-04-27 10:00
：Zoom会议ID：837 9519 6998（密码：466783）

报告人：Yoshinori Namikawa（日本京都大学数理解析研究所）

时  间：2023年4月27日上午10:00

地  点：Zoom会议ID：837 9519 6998（密码：466783）

内容摘要:

Symplectic varieties play important roles in algebraic geometry and geometric representation theory. They often show up with a good C^*-action. Such a variety is called a conical symplectic variety. A conical symplectic variety has a close relationship with Poisson geometry and contact geometry. In this talk we first look at conical symplectic varieties from the view point of Poisson geometry and contact geometry and next discuss the following topics: a finiteness theorem for conical symplectic varieties, a characterizaton of the closures of nilpotent orbit of complex semisimple Lie algebras, Poisson deformation and birational geometry. Finally we will report on recent developments on the explicit constructions of Q-factorial terminalizations of conical symplectic varieties.

个人简介：

Yoshinori Namikawa（並河良典）是京都大学数理解析研究所（RIMS, Research Institute for Mathematical Sciences, Kyoto University）的教授。他于1991年从京都大学获得博士学位。他曾在大阪大学和京都大学任教。他自2020年开始担任目前的职位。他的研究课题包括Calabi-Yau threefolds, singular hyperkahler varieties和symplectic singularities，在Invent. Math., Duke Math. J. , Math. Ann.等期刊上发表多篇论文。

 

联系人：余世霖