报 告 人：冯永祺 博士（荷兰Nijmegen大学）

报告地点：数学实验室

报告一：Introduction to unipotent representations of finite groups of Lie type

报告时间：2018年5月14日, 14:00

摘要：After recalling the basic definitions of representation theory of finite groups, we review the Deligne—Lusztig virtual characters. In particular, Lusztig introduced Unipotent Characters and Jordan Decomposition of Characters. We will explain these notions and use a (little) special example, the alternating group A5 to illustrate.

报告二：Introduction to the classification of unipotent representations of algebraic groups over a non-archimedean local field
报告时间：2018年5月14日, 15:00

摘要：We will introduce the unramified local Langlands parameters (mainly by Langlands and Deligne). Then we will review Lusztig’s classification of unipotent representations of simple algebraic groups over a non-archimedean local field. These representations were defined by him, and he gave a classification fits into Langlands’ philosophy. Finally, I will talk about a uniqueness result on supercuspidal unipotent representations, which confirms that Lusztig’s classification is essentially unique from the harmonic analysis viewpoint (formal degree, Plancherel measure).

欢迎各位师生参加！

注：本次讲座将纳入数学系继续教育课程。

理学院

2018年5月10日