学术报告
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Explicit Bounds for Fixed Subgroups of Endomorphisms of Free Products题目:Explicit Bounds for Fixed Subgroups of Endomorphisms of Free Products报告人:张强 副教授 (西安交通大学)时间:2023年3月30日 13:00-13:30地点:致远楼209室摘要:For an automorphism of a free group of rank n, Bestvina and Handel showed that the rank of the fixed subgroup is not greater than n (the so-called Scott conjecture). In the past forty years, their result was generalized by many au...张强 副教授 (西安交通大学)致远楼209室2023年3月30日 13:00-13:30
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Highly Accurate and Efficient Schemes for Nonlinear Dissipative Systems with ...题目:Highly Accurate and Efficient Schemes for Nonlinear Dissipative Systems with Particular Application to Navier-Stokes Equations姓名:沈捷 教授 (普渡大学)时间:2023年3月30日 上午 10:00-11:00地点:宁静楼115室摘要:I will present some recent advances on using the generalized scalar auxiliary variable (GSAV) approach to develop highly efficient and accurate schemes for a large class of n...沈捷 教授 (普渡大学)宁静楼115室2023年3月30日 上午 10:00-11:00
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Barron Type Spaces in Neural Networks题目:Barron Type Spaces in Neural Networks报告人:明平兵 研究员 (中国科学院数学与系统科学研究院)时间:2023年3月17日(星期五) 16:00-17:00地点:致远楼101室摘要:We shall discuss various Barron type spaces arising from neural networks. The relations among these spaces will be clarified, and we shall also establish the relationship between Barron type spaces and classical function spaces such...明平兵 研究员 (中国科学院数学与系统科学研究院)致远楼101室2023年3月17日(星期五) 16:00-17:00
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Special Invariant Conic Finsler Metrics on a Homogeneous Surface题目:Special Invariant Conic Finsler Metrics on a Homogeneous Surface报告人:许明 副教授 (首都师范大学)时间:2023年3月10日 13:00-14:00地点:腾讯会议室摘要:首先,我将介绍齐性芬斯勒几何的基本理论框架,及其针对芬斯勒锥度量的推广。作为这一理论的特例,我将介绍最近关于2维非交换连通李群上左不变芬斯勒锥度量的成果。通过常微分方程的解空间,我们可以局部完全确定上述锥度量中具有常旗曲率、满足Landsberg条...许明 副教授 (首都师范大学)腾讯会议室2023年3月10日 13:00-14:00
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Isoperimetric Bounds for Eigenvalues of Laplacian题目:Isoperimetric Bounds for Eigenvalues of Laplacian报告人:王奎 副教授 (苏州大学)时间:2023年3月10日 9:00-10:00地点:腾讯会议室摘要: In this talk, we will survey some known results on isoperimetric inequalities for Laplace eigenvalues, and discuss some recent progress on the Szegö-Weinberger type inequality for Neumann and Robin eigenvalues. Part of this talk is based on joint works with...王奎 副教授 (苏州大学)腾讯会议室2023年3月10日 9:00-10:00
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On some Integral and Pointwise Monotonicity Formulae in the Curvature Flows题目:On some Integral and Pointwise Monotonicity Formulae in the Curvature Flows报告人:郭洪欣 教授 (温州大学)时间:2023年3月10日 8:00-9:00地点:腾讯会议室摘要:Monotonicity formulae are fundamental in the studies of long term behavior of geometric flows. For a wide class of monotonicity formulae, there is a strategy to define them as follows. Calculate the first two derivatives of the Boltz...郭洪欣 教授 (温州大学)腾讯会议室2023年3月10日 8:00-9:00
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Curve Shortening Flow in a 3-Dimensional Pseudohermitian Manifold题目:Curve Shortening Flow in a 3-Dimensional Pseudohermitian Manifold报告人:孙俊 副教授 (武汉大学)时间:2023年3月9日 16:00-17:30地点:腾讯会议室摘要:In this talk, we introduce a curve shortening flow in a 3-dimensional pseudohermitian manifold with vanishing torsion. The flow preserves the Legendrian condition and decreases the length of curves. The stationary solution of our flow is a L...孙俊 副教授 (武汉大学)腾讯会议室2023年3月9日 16:00-17:30
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A Singular Kazdan-Warner Problem on a Compact Riemann Surface题目:A Singular Kazdan-Warner Problem on a Compact Riemann Surface报告人:朱晓宝 副教授 (中国人民大学)时间:2023年3月9日 15:30-16:30地点:腾讯会议室摘要:In this talk, we shall present an existence result for a singular Kazdan-Warner problem on a compact Riemann surface.参会方式:腾讯会议室账号:938-694-301All are welcome朱晓宝 副教授 (中国人民大学)腾讯会议室2023年3月9日 15:30-16:30