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学术会议学术报告讨论班 School Colloquium

讨论班

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19

2025-05

分析和微分方程讨论班——Restriction Problems in the Study of Eigenfunctions

报告人：高传伟（首都师范大学）时间：2025年5月21日，10:30-12:00地点：海纳苑2幢202室摘要：In this talk, we will begin with a brief overview of the restriction problem and its related topics, including the Kakeya problem, decoupling theory, and associated methods and techniques. We will then discuss how these problems connect to the study of eigenfunctions.联系人：席亚昆（yakunxi@zju.edu.cn）

12

2025-05

Wasserstein重心的几何

报告人：韩邦先教授（山东大学）时间：2025年5月19日（星期一），上午10:30-11:30地点：海纳苑2幢202摘要：近年来，源自于最优传输理论的Wasserstein重心问题收到了来自于数学理论和应用两个领域的广泛关注。本次报告中，我们将通过几个来自于几何、随机分析中的例子，从度量几何的角度阐述Wasserstein重心与曲率的联系。联系人：江文帅（wsjiang@zju.edu.cn)

12

2025-05

几何与拓扑讨论班——The Deformation Problem for Z/2 Harmonic 1-Forms over Kähler Manifolds

报告人：Siqi He(Morningside Center of Mathematics, Chinese Academy of Sciences）Pretalk主题：The Analytic Compactification of SL(2,C) Character Varieties 时间：2025年5月12日，16:15-16:45摘要：In the pretalk, we will introduce Taubes’ work on the analytic compactification of the SL(2,C) character variety of 3- and 4-manifolds from a gauge theory perspective. We will discuss the construction o...

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...

07

2025-05

计算与应用讨论班——A stabilized nonconforming finite element method for the surface biharmonic problem

报告人：吴朔男（北京大学）时间：2025年5月7日，14:00-16:00地点：海纳苑2幢203室摘要：This talk presents a novel stabilized nonconforming finite element method for solving the surface biharmonic problem. The method extends the New-Zienkiewicz-type (NZT) element to polyhedral (approximated) surfaces by employing the Piola transform to define the connection of vertex gradients between adjacent elements...

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 ...

28

2025-04

几何与拓扑讨论班——Chromatic redshift and Segal conjecture

报告人：Rixin Fang，Fudan UniversityPretalk主题：Introduction to K-theory and Hochschild Homology时间：2025年4月28日，16:15-16:45摘要：We introduce low dimensional K-theory first, and briefly explain Quillen's plus construction. Then we recall the Hochschild homology of an algebra, and its relation with K-theory. If time permits, we give a briefly introduction on stable homotopy theory, and $v...

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...

24

2025-04

概率统计讨论班——On a pinning model in correlated Gaussian random environments

报告人：宋健（山东大学）时间：2025年4月28日，15:30-17:00地点：海纳苑2幢312报告厅摘要：We consider a pinning model in correlated Gaussian random environments. For the model that is disorder relevant, we study its intermediate disorder regime and show that the rescaled partition functions converge to a non-trivial continuum limit in the Skorohod setting and in the Stratonovich setting, respecti...

21

2025-04

几何与拓扑讨论班——Real Bott periodicity at higher chromatic heights

报告人：Guchuan Li，Peking UniversityPretalk主题：Bott Periodicity and topological K-theory时间：2025年4月21日，16:15-16:45摘要：We will assume Bott Periodicity and use it to define a generalized cohomology theory: topological K-theory.Research Talk主题：Real Bott periodicity at higher chromatic heights时间：2025年4月21日，16:45-17:35摘要：Real Bott periodicity shows that the homotopy groups of Re...

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