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表示论与数论讨论班

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07

2025-08

表示论与数论讨论班——Leibniz $2$-algebras, linear $2$-racks and the Zamolodchikov Tetrahedron equation

报告人：生云鹤（吉林大学）时间：2025年8月7日，15:00-16:00 地点：海纳苑2幢102室摘要：First we show that a central Leibniz 2-algebra naturally gives rise to a solution of the Zamolodchikov Tetrahedron equation. Then we introduce the notion of linear 2-racks and show that a linear 2-rack also gives rise to a solution of the Zamolodchikov Tetrahedron equa...

17

2025-06

数论与表示论会议IX, Symposium on Number Theory and Representation Theory, IX

Symposium on Number Theory and Representation Theory, IX数论与表示论会议, IX2025年6月14日至15日2025/06/149:00-9:30签到9:30-10:20吴涵10:20-10:50茶歇、自由讨论10:50-11:40Andreas Mihatsch12:00-14:00午餐&午休14:00-15:50贺乔罗渝15:50-16:20茶歇、自由讨论16:20-17:10李兆林17:30晚餐2025/06/159:30-11:30王好武11:30-12:00茶歇、自由讨论12:00-14:00午餐&午休14:00-16:00魏志宁16:00-16:30自由讨论17:00晚餐题...

26

2025-05

代数与表示论讨论班——Continuous Quivers of Type A

21

2025-05

数论与表示论讨论班——Counting l-adic local systems over a curve

报告人：Hongjie Yu(Chinese Academy of Sciences)时间：2025年5月21日，16:00-17:00地点：紫金港校区东7数高院一楼报告厅组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun摘要：Given a punctured curve over a finite field, Deligne proposed counting irreducible geometric l-adic local systems with prescribed local ramification near each punc...

12

2025-05

数论与表示论讨论班—— Positivity of Fourier transform of zonal spherical functions

报告人：余君（北京大学）时间：2025年5月13日，10:30-11:30地点：海纳苑2幢203室摘要：Given a semisimple real linear group, a zonal spherical function is matrix coefficient associated to the unique spherical vector with value 1 at identity element in a unitary spherical principal series, which are important object in representation theory and harminic analysis. Each zonal spherical function is a posit...

29

2025-04

数论与表示论讨论班——Compactifications of subschemes of integral models of Hodge-type Shimura varieties

报告人：Shengkai Mao（Chinese Academy of Sciences）时间：2025年4月30日，16:00-17:00地点：紫金港校区东7数高院一楼报告厅组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun摘要：The special fiber of the integral model of a Hodge-type Shimura variety with parahoric level structure admits several natural stratifications that reflect the ...

25

2025-04

数论与表示论讨论班——Integral Hecke correspondences and what I learned from studying them

报告人：Michael Rapoport (University of Bonn)时间：2025年4月25日，11:00-12:00地点：紫金港校区东7数高院一楼报告厅组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun摘要：I will explain more details of our approach to the problem raised in the colloquium talk. (FYI) Colloquium abstract: Shimura varieties are algebraic varieties o...

02

2025-04

数论与表示论讨论班——Rapoport–Zink spaces and close p-adic fields

报告人：Sebastian Bartling（Universität Duisburg–Essen）时间：2025年4月2日，16:00-17:00地点：紫金港校区东7数高院一楼报告厅组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun摘要：I want to explain how to put Rapoport–Zink spaces and their function-field versions due to Hartl–Viehmann into a profinite family using the philosophy of c...

26

2025-03

数论与表示论讨论班——Local intertwining relation for GL(n)

报告人：Hiraku Atobe (Kyoto University) 时间：2025年3月26日，15:00-16:00组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun地点：紫金港校区东7数高院一楼报告厅摘要：The local intertwining relations for classical groups are the second main local theorem in Arthur’s theory of endoscopic classification. They are identities th...

18

2025-03

数论与表示论讨论班——On the cohomology of rational p-adic local systems

报告人：Shizhang Li，Chinese Academy of Sciences时间：2025年3月19日，16:00-17:00地点：紫金港校区东7数高院一楼报告厅组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun摘要：In p-adic geometry, there are more mysterious rational p-adic local systems than in algebraic/complex geometry, for example, the analytification of P^1 is no long...

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