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...

31

2025-07

动力系统讨论班——On the Birkhoff conjecture for nearly centrally symmetric domains

报告人：Vadim Kaloshin （奥地利科技学院）时间：2025年7月31日，10:30-12:00地点：海纳苑2幢203室摘要: In this talk, I will discuss a recent advance on Birkhoff conjecture, namely a proof that : an integrable, nearly centrally symmetric Birkhoff billiard table is necessarily an ellipse. This is done by combining recent breakthroughs by Bialy-Mironov (who prove the conjecture for centrally symmetr...

14

2025-07

2025年浙江大学分析几何暑期Mini-Workshop

  

03

2025-07

几何讨论班

03

2025-07

几何讨论班

02

2025-07

分析和微分方程讨论班

报告人：简昌彪（中国工程物理研究院）时间：2025年7月5日，09:30-10:30地点：海纳苑2幢203室摘要:For a smooth $k$-dimensional submanifold $\Sigma$ of a $d$-dimensional compact Riemannian manifold $M$, we will discuss how to extend the $L^p(\Sigma)$ restriction bounds of Burq--Gérard--Tzvetkov \cite{bgt2007}—originally proved for individual Laplace--Beltrami eigenfunctions—to arbitrary systems of $L^2(...

02

2025-07

分析和微分方程讨论班

报告人：王兴（湖南大学）时间：2025年7月5日，11:00-12:00地点：海纳苑2幢203室摘要:Marzo and Ortega-Cerd`a gave geometric characterizations for L^p-Logvinenko-Sereda sets on the standard sphere. Later, Ortega-Cerd`a and Pridhnani further investigated L^2-Logvinenko-Sereda sets and L^2-Carleson measures on compact manifolds without boundary. In this paper, we  characterize L^p-Logvinenko-Sereda s...

30

2025-06

分析和微分方程讨论班

报告人：侯家齐（路易斯安那州立大学）时间：2025年7月3日，10:30-11:30地点：海纳苑2幢203室摘要:Let X be a compact congruence arithmetic hyperbolic 3-manifold and let Y be a totally geodesic surface in X. We let f be a Hecke-Maass form on X, which is a joint eigenfunction of the Laplacian and the Hecke operators. I will talk about the asymptotic behavior of f when its Laplace eigenvalue is large, espe...

30

2025-06

分析和微分方程讨论班——Strichartz estimates for the Schrödinger equation on the sphere

报告人：黄晓琦（路易斯安那州立大学）时间：2025年7月3日，9:30-10:30地点：海纳苑2幢203室摘要：We will discuss optimal space-time estimates in $L^q_{t,x}$ spaces for solutions to the Schrödinger equation on the standard round sphere, which is related to the results of Burq, Gérard and Tzvetkov (2004). The proof is based on the arithmetic properties of the spectrum of the Laplacian on the sphere, as ...

30

2025-06

辛拓扑与物理讨论班——​Novikov ring from microlocal sheaves

报告人：张秉宇（University of Southern Denmark）时间：2025年7月9日，14:00-15:30地点：海纳苑2幢203室摘要：In this talk, I explain how to relate the Novikov ring and microlocal sheaf theory based on the works of Tamarkin and Vaintrob. This relation has been successfully applied to irregular Riemann-Hilbert correspondence and symplectic geometry, and recently, Scholze revealed certain potential appli...

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