学术报告
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On Multi-Dimensional Rarefaction Waves题目:On Multi-Dimensional Rarefaction Waves报告人:罗天文 副教授 (广州华南师范大学)时间:2023年11月17日 (周五) 14:00-15:00地点:腾讯会议室摘要:We study the two-dimensional acoustical rarefaction waves under the irrotational assumptions. We provide a new energy estimates without loss of derivatives. We also give a detailed geometric description of the rarefaction wave fronts. As an applica...罗天文 副教授(广州华南师范大学)腾讯会议室2023年11月17日 (周五) 14:00-15:00
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On the Long-Wave Approximation for the Euler-Poisson System题目:On the Long-Wave Approximation for the Euler-Poisson System报告人:杨雄锋 教授 (上海交通大学)时间:2023年11月17日 (周五) 15:30-16:30地点:腾讯会议室摘要:In this talk, I will present the study of the long wave approximation to the Euler-Poisson system of the ion-acoustic wave in cold plasma according to the spatial-temporal scale and the amplitude of waves. We first justify rigorously...杨雄锋 教授(上海交通大学)腾讯会议室2023年11月17日 (周五) 15:30-16:30
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Minimal Time for the Null-Controllability of Linear Hyperbolic Balance Laws题目:Minimal Time for the Null-Controllability of Linear Hyperbolic Balance Laws报告人:胡龙 教授(山东大学)时间:2023年11月16日(周四) 14:00-15:00地点:腾讯会议室摘要:This talk is devoted to the minimal time for the null-controllability of linear hyperbolic balance laws by means of one-sided boundary controls. It is known in some previous works that such a critical time can be sensitive to...胡龙 教授 (山东大学)腾讯会议室2023年11月16日 (周四) 14:00-15:00
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Some Results on Rough Solutions of 3D Compressible Euler Equations题目:Some Results on Rough Solutions of 3D Compressible Euler Equations报告人:张华丽 副教授(湖南大学数学学院)时间:2023年11月16日 (周四) 15:30-16:30地点:腾讯会议室摘要:For the Cauchy problem of irrotational Euler equations and incompressible Euler equations, the sharp regularity has been obtained for controlling the local existence of solutions. However, the sharp regularity problem for...张华丽 副教授(湖南大学数学学院)腾讯会议室2023年11月16日 (周四) 15:30-16:30
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On Principal Eigenvalues for Asome Spatially Discrete and Time-Periodic Probl...题目:On Principal Eigenvalues for Asome Spatially Discrete and Time-Periodic Problems报告人:刘爽 助理教授 (北京理工大学)时间:2023年11月14日 (星期二) 16:00-17:00地点:致远楼101室摘要:In this talk, we shall discuss the effect of the spatio-temporal heterogeneity on the principal eigenvalue of some time-periodic and spatially discrete eigenvalue problem. Various asymptotic behaviors of t...刘爽 助理教授 (北京理工大学)致远楼101室2023年11月14日 (星期二) 16:00-17:00
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New Asymptotics Applied to Functional Coefficient Regression and Climate Sens...题目:New Asymptotics Applied to Functional Coefficient Regression and Climate Sensitivity Analysis报告人:Prof. Qiying Wang (The University of Sydney)时间:2023年11月10日(周五)上午10:00-11:00地点:致远楼101室摘要:A general asymptotic theory is established for sample cross moments of nonstationary time series, allowing for long range dependence and local unit roots. The theory provides a sub...Prof. Qiying Wang (The University of Sydney)致远楼101室2023年11月10日(周五)上午10:00-11:00
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The (a,b,c)-Generalized Motzkin Paths with Vertical Steps: Bijections and Sta...题目:The (a,b,c)-Generalized Motzkin Paths with Vertical Steps: Bijections and Statistic Enumerations报告人:孙怡东 教授 (大连海事大学)时间:2023年11月13日 (星期一) 下午3:00-4:30地点:致远楼103室摘要:A generalized Motzkin path, called G-Motzkin path for short, of length n is a lattice path from (0, 0) to (n, 0) in the first quadrant of the xoy-plane that consists of up steps u=(1, 1), dow...孙怡东 教授 (大连海事大学)致远楼103室2023年11月13日 (星期一) 下午3:00-4:30
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Entropy Power Inequalities On Riemannian Manifolds And Ricci Flow题目:Entropy Power Inequalities On Riemannian Manifolds And Ricci Flow报告人:李向东 教授 (中国科学院数学与系统科学研究院)时间:2023年11月3日 16:00-17:00地点:致远楼101室Abstract: In this talk, I will first recall the entropy power inequalities for the heat equation and nonlinear diffusion equation on Euclidean spaces. Then I will present our recent results on the entropy power inequalities...李向东 教授 (中国科学院数学与系统科学研究院)致远楼101室2023年11月3日 16:00-17:00