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16

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...

16

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...

15

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...

14

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...

07

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...

02

2025-04

数论与表示论讨论班——Rapoport–Zink spaces and close p-adic fields

报告人：Sebastian Bartling（Universität Duisburg–Essen）时间：2025年4月2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：I want to explain how to put Rapoport–Zink spaces and their function-field versions due to Hartl–Viehmann into a profinite family using the philosophy of c...

28

2025-03

组合数学讨论班——Algebraic Structure of Permutational Polynomials over finite fields

报告人：袁平之教授（华南师范大学）时间：2025年3月28日上午10:00-11:30地点：海纳苑2幢820会议室摘要：In this talk, we propose some new algebraic structures of permutation polynomials (PPs) over finite fields. As two applications of these new algebraic structures, we give some classes of new PPs over finite fields and answer an open problem raised by Charpin and&nb...

26

2025-03

数论与表示论讨论班——Local intertwining relation for GL(n)

报告人：Hiraku Atobe (Kyoto University) 时间：2025年3月26日，15:00-16:00组织者：Dongwen Liu, Yifeng Liu, Andreas Mihatsch, Binyong Sun地点：紫金港校区东7数高院一楼报告厅摘要：The local intertwining relations for classical groups are the second main local theorem in Arthur’s theory of endoscopic classification. They are identities th...

25

2025-03

分析和微分方程讨论班——Triangles and triple products of Laplace eigenfunctions

报告人：Emmett Wyman（纽约宾汉普顿大学）时间：2025年3月26日，09:30地点：ZOOM（923 5610 7458，密码：160721）摘要：At what frequencies does the product of two Laplace-Beltrami eigenfunctions on a manifold concentrate? Equivalently, given three eigenfunctions, how large is the integral of their product over the manifold? In this talk, we provide a relatively complete answer to this question, and in t...

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