BIMSA-YMSC Tsinghua Number Theory Seminar

Organizers：

Hansheng Diao, Heng Du, Yueke Hu, Bin Xu, Yihang Zhu

Speaker：

Zhi Hu (NJUST)

Time：

Thur., 10:00-11:00 am, Mar. 27, 2025

Online：

Zoom Meeting ID: 4552601552

Passcode: YMSC

Title：

Parahoric reduction of formal G-connections

Abstract:

In this talk, we will establish parahoric reduction theory for G-connections over formal punctured disk, which generalizes classical Levelet-Turrittin-Babbitt-Varadarajan’s theory. As applications, it provides the Tannakian functoriality of regularity via Bremer-Sage’s geometric minimal K-type theory, and also a parahoric version of Frenkel-Zhu’s Borel reduction. This is a joint work with Pengfei Huang, Ruiran Sun, and Runhong Zong.