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20

2023-09

Zeta Functions of Shimura Varieties: Past, Present, and the Near Future

数论与表示论讨论班Number Theory and Representation Theory SeminarTime: June 21, Wednesday, 16:00-17:00 Venue: Lecture HallSpeaker:Yihang Zhu朱艺航（University of Maryland） Title: Zeta Functions of Shimura Varieties: Past, Present, and the Near FutureAbstract: I will first recall the general expectations of Shimura, Langlands, and Kottwtiz on the shape of the zeta function of a Shimura variety, or...

20

2023-09

Some new results on repeated patterns in proper edge colorings

题目：Some new results on repeated patterns in proper edge colorings报告人：张韬（之江实验室）时间、地点：2023年6月28日8：30-10：30，海纳楼2幢203摘要：In this talk, we will study a new extremal problem recently posed by Conlon and Tyomkyn [Repeated patterns in proper colourings, SIDMA, 2021]. Given a graph $H$ and an integer $k\geqslant 2$, let $f_{k}(n,H)$ be the smallest number of colors $c$ suc...

20

2023-09

Radial Basis Function-Finite Difference Method for Solving PDEs and Eigenvalue Problems on Riemannian Manifolds

题目：Radial Basis Function-Finite Difference Method for Solving PDEs and Eigenvalue Problems on Riemannian Manifolds报告人：蒋诗晓（上海科技大学）时间：2023年6月27日14：00-16：00地点：海纳苑2幢204 摘要：In this talk, we will first discuss the Radial Basis Function (RBF) approximation to differential operators on smooth tensor fields defined on Riemannian submanifolds of ...

20

2023-09

Number Theory and Representation Theory Seminar

数论与表示论讨论班Number Theory and Representation Theory SeminarTime: June 28, Wednesday, 15:00-16:00 Venue： Lecture HallSpeaker：Bin Xu 徐斌（Tsinghua University）Title：On the structure of Arthur packets for real symplectic and orthogonal groupsAbstract: The irreducible admissible representations of Arthur class are the local components of automorphic representations. They are conjectured to b...

20

2023-09

A local twisted trace formula for Whittaker induction of coregular symmetric pairs

数论与表示论讨论班Number Theory and Representation Theory SeminarTime: June 28, Wednesday, 16:00-17:00 Venue: Lecture HallSpeaker:Chen Wan万忱（Rutgers University） Title: A local twisted trace formula for Whittaker induction of coregular symmetric pairsAbstract: In this talk, I will discuss the geometric expansion of a local twisted trace formula for the Whittaker induction of any symmetric pairs...

20

2023-09

Generalization Analysis for Contrastive Representation Learning

题目：Generalization Analysis for Contrastive Representation Learning报告人：应益明教授（University at Albany, State University of New York）时间：2023年6月30日（星期五）9：00地点：腾讯会议会议ID：925-524-124会议密码：310058Abstract: In this talk, I will present recent progress in establishing the learning theory foundation for Contrastive Representation Learning (CRL). CRL has demonstrated ...

20

2023-09

Mean curvature flow translators with prescribed ends

题目: Mean curvature flow translators with prescribed ends报告人: 孙奥（芝加哥大学）时间：2023年7月12日，15:30-地点：海纳苑2幢101室摘要: Mean curvature flow is the fastest way to decrease the area of surfaces. It is the model in many disciplines such as material science, fluid mechanism, and computer graphics. The translators are a special type of mean curvature flow soliton. They are the singular...

20

2023-09

Stable nearly self-similar blowup of the 2D Boussinesq and 3D Euler equations with smooth data

Title: Stable nearly self-similar blowup of the 2D Boussinesq and 3D Euler equations with smooth data 报告人：陈嘉杰 (Courant Institute, New York University)时间：7月14日(周五)，15:00-16:00，海纳苑2幢204室Abstract: Whether the 3D incompressible Euler equations can develop a finite-time singularity from smooth initial data is an outstanding open problem. In this talk, we will first...

20

2023-09

Hölder stability of quantitative photoacoustic tomography based on partial data

题目： Hölder stability of quantitative photoacoustic tomography based on partial data.报告时间:2023年7月26日 10：00-11：00报告地点：海纳苑2幢210报告厅摘要: The talk is related to the inverse problem of reconstructing the diffusion and absorption coefficients of the diffusion equation from internal data in photo-acoustic imaging. I will show that the problem is Hölder stable in subregi...

20

2023-09

Algebraic Birkhoff factorization and locality in renormalization

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