学术报告
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Regularities of solutions to two Minkowski problemsIn this talk, we will study C^{1, 1} regularity for solutions to the degenerate Lp Dual Minkowski problem and the existence of the smooth solution to the Gauss image.腾讯会议号:131-965-267会议链接:https://meeting.tencent.com/dm/iD9IGmFJEu19 All are ...陈立 副教授 (湖北大学)腾讯会议室2022年5月27日 10:00-11:00
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Asymptotic convergence for a class of anisotropic curvature flowsIn this talk, by using new auxiliary functions, we study a class of contracting flows of closed, star-shaped hypersurfaces in R^n+1 with speed $r^{\frac{\alpha}{\beta}} \sigma_k^{\frac{1}{\beta}}$, where $\sigma_k$ is the $k$-th element...李海中 教授 (清华大学)腾讯会议室2022年5月27日 9:00-10:00
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On minimal surfaces in R^n and spacelike stationary surfaces in R^4_1In this talk, we will first introduce some classical topics concerning the geometry of minimal surfaces in R^n. Then we will discuss the Bernstein type theorems and Gauss-Bonnet type formula for minimal surfaces in R^3 or R^n...王鹏 教授 (福建师范大学)腾讯会议室2022年5月27日(星期五) 8:00-9:00
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Anisotropic Compressible Flows in the Small Reynolds Number RegimeIn this talk we discuss an existence result regarding bounded-energy weak-solutions for the quasi-stationary compressible Stokes equations. This system arises for instance in biology, porous media, supra-conductivity or other applications in the low Reynolds number regime. These equations are formally obtained from the Navier-Stokes system for a compressible barotropic fluid by discarding the convective terms from the momentum equation.Dr. Cosmin Burtea (University of Paris VII)Zoom会议室2022年5月18日(星期三) 16:00-17:00
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Partially Dissipative Hyperbolic Systems, Existence and Relaxation LimitWe present a method to study global strong solutions of partially dissipative hyperbolic systems in a critical regularity setting. Introducing hybrid Besov norms, with different regularity exponents in low and high frequency, we pinpoint optimal smallness conditions for global well-posedness and get more accurate information on the qualitative properties of the constructed solutions.To handle the high frequencies of the solution, our analysis relies on the construction of a Lyapunov functional in the spirit of the one constructed by Beauchard and Zuazua (ARMA 2011). And concerning the low frequencies, exhibiting a damped mode with faster time decay than the whole solution plays a key role.Dr. Timothee Crin-Barat (University of Deusto)腾讯会议室2022年4月25日(星期一) 16:00-17:00
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Existence of Good Moduli Space of Vector BundlesWe prove that, among all open substacks of moduli stacks of rank 2 bundles over a curve, the open substack of semi-stable bundles is the unique maximal one that admits a separated good moduli space. One example in rank 3 case shows that a s...张旭成 博士 (杜伊斯堡埃森大学)Zoom会议室2022年3月16日(星期三) 16:00-18:00
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An Introduction to Schur-Weyl DualityIn this talk, we start with recalling the double centralizer property in a graduate algebra course, then review its origin where Schur completely determined the polynomial representations of GL(n,$\mathbb{C}$) via the technique in 1927, ...方明 研究员 (中国科学院数学与系统科学研究院)腾讯会议室2022年1月13日(星期四) 19:30-20:30
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Some Results on One-Dimension Systems of Quasilinear Wave EquationsIn this talk, for one-dimension systems of quasilinear wave equations with null conditions, we will introduce the following results:1. Global existence of classical solutions for the Cauchy problem in the small data setting;...查冬兵 副教授 (东华大学)致远楼101室2022年1月6日(星期四) 10:00-11:00