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06

2025-01

Approximate Message Passing for Rotationally-Invariant Models: A Unified Framework and Applications to Spiked Models

报告人：马俊杰时间：2025/01/17 13:00-17:00地点：线上报告腾讯会议ID：321-587-300摘要：In the first part of this talk, we present a unified framework for constructing Approximate Message Passing (AMP) algorithms for rotationally-invariant models. By employing a general iterative algorithm template and reducing it to long-memory Orthogonal AMP (OAMP), we...

03

2025-01

A new proof of the Eichler Shimura relation

Speaker: Pol van Hoften (Vrije Universiteit Amsterdam)Time: 2025-01-15，10:00Location: 海纳苑2幢210Abstract: Associated to a modular form f is a two-dimensional Galois representation whose Frobenius eigenvalues can be expressed in terms of the Fourier coefficients of f, using a formula known as the Eichler--Shimura congruence relation. This relation was proved by Eichler--Shimu...

03

2025-01

Homological method in branching laws

Speaker: 陈睿（浙江大学）Time: 2025-01-07，16:00Location: 海纳苑2幢210Abstract: Understanding how a representation decomposes when restricted to a 'nice' subgroup is a problem of fundamental interest in representation theory. In this talk, following D. Prasad, we will discuss some recent results of the homological method in branching laws, especially a vanis...

02

2025-01

浙大-西湖几何分析讨论班——Construction of Morse Flow Lines between Self-expanders

报告人：陈乐天（University of Tennessee, Knoxville）时间：2025年1月6日（星期一），下午4:00-5:00地点：海纳苑2幢203摘要：One of the central questions in the study of mean curvature flow (MCF) is to determine whether one can flow past singularities. For asymptotically conical singularities, self-expanders model the potential continuations of MCFs past singularities. However, due to ...

02

2025-01

Problems related to pointwise convergence for Schrodinger groups

Speaker: 邓清泉（华中师范大学）Time: 2025-01-07，10:20-11:20Location: 海纳苑2幢205Abstract: In this work, we focus on the maximal estimates and pointwise convergence for Schrodinger group $e^{itH}$ with potentials in dimension one, where $H=-\Delta+V$. Under some assumptions on potential V, by using the distorted Fourier transform, as well as the function spaces associat...

02

2025-01

Some progress on dispersive estimates of higher order elliptic operator

Speaker: 尧小华（华中师范大学）Time: 2025-01-07，9:15-10:15Location: 海纳苑2幢205Abstract: The dispersive estimates of Schr\”odinger operators are interesting topics, which play fundamental roles in the wellposedness of nonlinear dispersive equations and the stability of solitary waves. In this talk, I will recall some classical works on Kato smoothing, Strichartz ...

31

2024-12

Mean curvature flow and applications

23

2024-12

Fast high-order singular quadrature and PDE solvers in complex geometries

20

2024-12

Permutation groups, symmetry breaking and probability

报告人：黄弘毅博士（英国布里斯托大学）时间：2024年12月24日 10:30-11:30地点：海纳苑2幢820摘要: There are two natural ways to break all the non-trivial symmetries of a graph: pointwise and setwise, which involve the base size and the distinguishing number of a permutation group, respectively. These two invariants have been investigated for many decades, finding a wide range of applications. In th...

19

2024-12

浙大-西湖几何分析讨论班——Uniqueness of Kahler-Ricci Flow Limit

报告人：张州教授（悉尼大学）时间：2024年12月26日（星期四），下午3:00-4:00地点：海纳苑2幢102摘要：we discuss the fundamental/elementary problem on the uniqueness of Kahler-Ricci flow limit. The low regularity consideration is particularly convenient. There is also motivation from more recent study on the singularity type. Accidentally, what we’ve confirmed for the finite and infi...

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