中央研究院數學研究所

Towards affine character sheaves I: Geometric input

2026/03/16 (Mon.) 15:00~16:30

Date : 2026/03/16 (Mon.) 15:00~16:30
Location : Seminar Room 617, Institute of Mathematics (NTU Campus)
Speaker : Aron Heleodoro (Shanghai Institute for Mathematics and Interdisciplinary Sciences)
Organizer : Cheng-Chiang Tsai (AS)
Abstract :
In the first talk, I will introduce the Newton stratification of the loop group LG. I will start by an introduction to the classical results on the parametrization of these points. Then I will explain how to construct a finitely presented sub ind-scheme of LG associated to each Newton point. Finally, I will explain a result that relates the adjoint quotient of a single arbitrary Newton stratum to that of a basic Newton stratum for a Levi subgroup of G.