​(2022-12-02) 代数与数论讨论班: Daxin Xu--Bessel F-isocrystals for reductive groups

发布者:杨璐发布时间:2022-11-29浏览次数:148


丘成桐中心代数与数论组周五讨论班

SEU Yau Center Algebra and Number Theory Weekly Seminar


   为活跃中心学术氛围,促进成员间的学术交流并激发合作,丘成桐中心代数与数论组从2022年10月末开始定期组织周五讨论班。周五讨论将面向代数与数论组、全体中心成员、数学学院研究生及感兴趣的校内外师生。

  2022年12月2日,代数与数论组周五讨论班将由中国科学院晨兴数学中心许大昕副教授主讲,报告信息如下。


Title: Bessel F-isocrystals for reductive groups

Speaker: Assoc. Prof. Daxin Xu(许大昕

Affiliation: Morningside Center of Mathematics(晨兴数学中心

Time: 15:30-16:30, Friday, December 2nd, 2022 (UTC+8, Beijing Time)

Venue腾讯会议/VooV Meeting259-223-790

入会链接https://meeting.tencent.com/dm/eS5jKIFG5ZYP

Inviter: Chao ZHANG 张超), Hao ZHANG 张浩)


Abstract

I will first review the relationship between the Kloosterman sums and the classical Bessel differential equation. Recently, there are two generalizations of this story (corresponding to GL_2-case) for arbitrary reductive groups using ideas from the geometric Langlands program, due to Frenkel-Gross and Heinloth-Ngô-Yun. I will discuss my joint work with Xinwen Zhu where we unify previous two constructions from the p-adic aspect and identify the exponential sums associated to different groups as conjectured by Heinloth-Ngô-Yun. If time permits, I will also talk about my recent joint work with Masoud Kamgarpour and Lingfei Yi on the generalization of the above story to hypergeometric sheaves.


Speaker

许大昕中科院晨兴数学中心副教授,主要研究领域为p-进霍奇理论, 朗兰兹纲领其于2017年在巴黎萨克雷大学取得博士学位,师从算术几何名家Ahmed Abbes其后在加州理工大学任讲师2020年入职晨兴数学中心任副教授已在Inventiones Mathematicae Compositio Mathematica等著名杂志发表多篇文章并于2022年获得国家优秀青年科学基金


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