学术报告
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25
2024-06
Transition threshold for 2D Taylor-Couette flow in the exterior domain题目:Transition threshold for 2D Taylor-Couette flow in the exterior domain 报告人:李特 副研究员 (中国科学院) 摘要:In this paper, we consider the stability of the incompressible Navier-Stokes equations in the exterior domain of the two-dimensional T...
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25
2024-06
Extended codes and deep holes of MDS codes题目:Extended codes and deep holes of MDS codes 报告人:吴严生 (教授) 南京邮电大学 摘要:In this talk, we will discuss the relationship between extended codes and deep holes of MDS codes. To be precise, we will prove that the extended codes C(u) of an [n...
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24
2024-06
The many facets of permutohedra题目:The many facets of permutohedra 报告人:郭龙 教授(南开大学) 摘要: A permutohedron is a polytope whose vertices are the rearrangements of a vertor in an n-dimensional Euclidean space. It is also well known that a permutohedron is the Newton po...
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24
2024-06
Quasi-diagrams and gentle algebras题目:Quasi-diagrams and gentle algebras 报告人:叶郁 教授(中国科学技术大学) 摘要:We associate each gentle algebra A a quasi-diagram, which is by definition an involution in certain symmetric group, and show that the finiteness of the global dimension ...
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24
2024-06
Learning network-structured dependence from non-stationary multivariate point process data题目:Learning network-structured dependence from non-stationary multivariate point process data 报告人:张春明 教授(美国威斯康星大学麦迪逊分校) 摘要:Understanding sparse network dependencies among nodes from multivariate point process data has broad applica...
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21
2024-06
On the Hopf-Tsuji-Sullivan dichotomy on manifolds without conjugate points题目:On the Hopf-Tsuji-Sullivan dichotomy on manifolds without conjugate points 报告人:刘飞 副教授 摘要:In this talk, we will establish the Hopf-Tsuji-Sullivan dichotomy for the Bowen-Margulis-Sullivan measures on visibility manifolds without...
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20
2024-06
Finite general linear groups and vertex operators报告题目: Finite general linear groups and vertex operators报告人: 景乃桓 教授 (北卡州立大学)摘要: We give a new approach to compute irreducible characters of the general linear group over the finite field. The vertex algebraic method enhanced Green's theory and ...
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20
2024-06
一类形变李代数的结构与表示题目: 一类形变李代数的结构与表示报告人: 郜云 教授 (约克大学)报告摘要: 扭Heisenberg-Virasoro代数是一类重要的无限维李代数,它与一类曲线的模空间有关。我们对这一李代数的结构与表示进行了系统的研究。报告人简介:郜云,加拿大约克大学教授,德国洪堡学者,曾获国家海外杰出青年基金 (2010年)。主要研究兴趣是高维仿射李代数及相关代数的结构与表示理论。在高维仿射李代数研究领域做出了系列杰出工作,是国际上这个研究领域中核心的和活跃的研究者之一,目前在国际一流数学杂志...
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18
2024-06
Equilibrium states for non-uniformly hyperbolic geodesic flows题目:Equilibrium states for non-uniformly hyperbolic geodesic flows 报告人:陈栋 助理教授 摘要:The geodesic flow over a closed negatively curved manifold is Anosov, thus any Hölder potentials have unique equilibrium states. Howeve...
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18
2024-06
Newton Polyhedrons and Hodge Numbers of Non-degenerate Laurent Polynomials题目:Newton Polyhedrons and Hodge Numbers of Non-degenerate Laurent Polynomials 报告人: 王浩旭 博士(清华大学丘成桐数学中心) 摘要: Claude Sabbah has defined the Fourier transform G of the Gauss-Manin system for a nondegenerate and convenient Laurent po...