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表示论与数论讨论班

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12

2025-03

数论与表示论讨论班——Unitary Shimura varieties at ramified primes

报告人：Andreas Mihatsch（Zhejiang University）时间：2025年3月12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：A general problem in the theory of Shimura varieties is to understand the geometry mod p of suitable integral models. The purpose of my talk is to discus...

25

2025-02

数论与表示论讨论班——Estimate for Betti numbers of étale sheaves and applications

报告人：Haoyu Hu (Nanjing University)时间：2025年2月26日16:00-17:00地点：紫金港校区东7数高院一楼报告厅摘要：In this talk, we discuss a result on upper bounds of all Betti numbers of an étale sheaves on a smooth variety of positive characteristic. This bound only depends on the rank and the Abbes-Saito’s logarithmic ramification conductor along the boundary. We will focus on the ideas of the proo...

21

2024-10

代数与表示论专题报告——The Unicity Theorem and the center of the SL3-skein algebra

Speaker: Dr. Zhihao Wang (王志浩博士) (新加坡Nanyang Technological Univ. and 荷兰Univ. of Groningen.)Time: 3:00-5:00pm, Oct. 23 (Wednesday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: SLn-skein algebra is related to character variety, Higher Teichmüller theory, and cluster algebra. For example, the reduced stated SL2-skein algebra has proved to be isomorphi...

18

2024-10

代数与表示论系列报告——Some open questions in non-commutative algebra

Title：Some open questions in non-commutative algebraSpeaker: Professor James Zhang (张坚教授) (University of Washington)Time: 3:00-4:00pm, Oct. 21 (Monday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: We survey some important open questions in noncommutative algebra posted during the last 30 years, some of which are motivated by noncommutative algebraic geometry...

18

2024-10

代数与表示论系列报告——On a class of noetherian prime Hopf algebra

Speaker: Dr.zahra nazemian (University of Graz, Austria)Time: 4:10-5:10pm, Oct. 21 (Monday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: Brown and Goodearl proposed a conjecture stating that every prime noetherian Hopf algebra is Auslander Gorenstein (AG). We prove that if a prime noetherian Hopf $k$-algebra is AG, or more generally, if it possesses an Auslander dualizin...

07

2024-10

代数与表示论特邀报告——Modular Poisson varieties and its symplectic foliations

30

2024-09

代数与表示论特邀报告——Infinite rank cluster algebras arising from double Bott-Samelson cells

12

2024-09

表示论与数论讨论班——Whittaker coefficients of metaplectic Eisenstein series and multiple Dirichlet series

报告人：陈彦泽（University of Alberta)时间：2024年9月19日上午10:00-11:00地点：海纳苑2幢105室摘要：We investigate the Whittaker coefficients of an Eisenstein series on a global metaplectic cover of a semisimple algebraic group induced from the Borel subgroup and establish the relation with Weyl group multiple Dirichlet series, verifying a conjecture of Brubaker-Bump-Friedberg. This is a joint work ...

12

2024-08

代数与表示论讨论班——Two lectures on cluster algebras and representation theory

25

2024-07

代数与表示论讨论班——A Summer Series of Talks on Cluster Algebras and Related Topics

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