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2025

17

2025-04

几何与拓扑讨论班——Extremals in log-concavity: an algebro-geometric viewpoint

报告人：Jian Xiao，Tsinghua UniversityPretalk主题：Examples on log-concavity时间：2025年4月18日，16:15-16:45摘要：We present several examples on log-concavity in geometry and combinatorics, behind which is the Hodge index theorem.Research Talk主题：Extremals in log-concavity: an algebro-geometric viewpoint时间：2025年4月18日，16:45-17:35摘要：We show how to formulate the extremal problem in log-co...

14

2025-04

计算与应用讨论班——Topology-enhanced machine learning for consonant recognition

报告人：朱一飞（南方科技大学）时间：2025年4月16日，15:30-16:30地点：海纳苑2幢203室摘要：In artificial-intelligence-aided signal processing, existing deep learning models often exhibit a black-box structure. The integration of topological methods serves the dual purpose of extracting structural information from time-dependent data as well as making models more interpretable. In this tal...

11

2025-04

几何与拓扑讨论班——Spheres, spectral algebraic geometry, and Jacquet–Langlands correspondence

报告人：Yifei Zhu，Southern University of Science and TechnologyPretalk主题：Quantum materials, Higgs bundles, and geometric Langlands correspondence时间：2025年4月14日，16:15-16:45摘要：With motivation from condensed matter physics and materials science in collaboration with physicists, I’ll discuss explicit examples of eigenbundles associated to both gapped and gapless quantum mechanical system...

11

2025-04

Distinguished Lecture——复几何的一些进展

11

2025-04

分析和微分方程讨论班——ON THE REGULARITY OF THE SOLUTION OF SOME NONLINEAR PROBLEMS

报告人：Michel Marie Chipot（瑞士苏黎世大学）时间：2025年4月16日，11:00-12:00地点：海纳苑2幢106摘要：The goal of this talk is to present regularity results regarding problems of the type −∆u + β(u − ϕ) = 0 in Ω, u = 0 on ∂Ω which depend only on ϕ and not on the monotone function β. This uses nice techniques developed by H. Brezis and collaborators. (Joint work with David Kinderlehrer)报告人简介...

10

2025-04

量子计算讨论班——Demonstrating 88Sr+ Ion-Photon Entanglement at Near-Telecom Wavelengths

报告人：谢远衡（杜克大学）时间：2025年4月15日，19:00-21:00地点：海纳2幢105室摘要：The strontium ion is a promising candidate for medium-distance quantum networking due to its atomic transition at 1092 nm. This transition could align well with pre-existing fiber optic infrastructure, depending on the specific communication mode and fiber loss characteristics. Thus, lossy photon conversion processes...

08

2025-04

Distinguished Lecture——Hilbert's Tenth Problem and its Further Developments

07

2025-04

Distinguished Lecture——Inverse Problems For Hyperbolic PDEs

03

2025-04

几何与拓扑讨论班——Symplectic foliation of modular Poisson structures

报告人：Zheng Hua，University of Hong KongPretalk主题：On Modular Poisson structures时间：2025年4月7日，16:15-16:45摘要：We will briefly recall Poisson structures in the algebraic geometry context. We will focus on two main classes of examples: moduli space of sheaves on del Pezzo surfaces and semi-classical limits of noncommutative deformations.Research Talk主题：Symplectic foliation of modular P...

03

2025-04

概率统计讨论班——On the compressible Euler equation and the Langevin deformation of flows on Wasserstein space

报告人：李向东，中国科学院系统与数学科学研究院时间：2025年4月10日，15:30-17:00地点：海纳苑2幢312室摘要：In my previous work and my joint work with Songzi Li, we proved the W-entropy formula for the heat equation of the Witten Laplacian on Riemannian manifolds and the W-entropy formula for the Wasseestein geodesic flow on Riemannian manifolds. We introduced the Langevin deformation of f...

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