11
2021-05
A free boundary problem on 2D liquid crystal droplets
报告人: 耿志远（Basque Center for Applied Mathematics）时间: 5月11日 周二下午2:00-4:00地点：欧阳楼314摘要: Liquid crystal droplets are of great interest from physics and applications. They are important in the studies of topological defects, both in a bulk and on a surface, in understanding of anisotropic surface energies and anchoring conditions of liquid crystals. In this lecture I will ta...
11
2021-05
Interface Dynamics in a Two-phase Tumor Growth Model
报告人：童嘉骏（Hedrick Assistant Adjunct Professor，UCLA）时间：2021年5月11日，周二10:45-11:45地点：欧阳楼314Abstract: We study a two-phase tumor growth model in two space dimensions, where proliferation of the tumor cells leads to expansion of the tumor domain and migration of surrounding normal cells into the exterior vacuum. Instead of considering evolution of cell densities, our focus will be...
10
2021-05
ASYMPTOTIC DISTRIBUTIONS OF HIGH-DIMENSIONAL DISTANCE CORRELATION INFERENCE
Speaker: Qi-Man Shao Department of Statistics and Data Science Southern University of Science and TechnologyAbstract: Distance correlation has become an increasingly popular tool for detecting the nonlinear dependence between a pair of potentially high-dimensional random vectors. Most existing works have explored its asymptotic distributions under the null hypothesis of independence be...
07
2021-05
A conservative semi-Lagrangian hybrid Hermite WENO scheme for linear transport equations and the nonlinear Vlasov-Poisson system
报告人：邱建贤（厦门大学数学科学学院教授）时间：2021年5月7日（周五）上午10：00-12：00 地点：工商楼200-9会议室内容简介：In this presentation, we will present a high order conservative semi-Lagrangian (SL) hybrid Hermite weighted essentially non-oscillatory (HWENO) scheme for linear transport equations and the nonlinear Vlasov-Poisson (VP) system. The proposed SL hybrid HWENO scheme adopts a weak fo...
30
2021-04
Cluster categories and rational curves
报告人：华诤副教授（香港大学）时间地点：4月30日4:00-5:00 ，工商管理楼200-9教室摘要：Given a semi-simple collection of rational curves on a smooth quasi-projective 3-fold, its multipointed noncommutative deformation is represented by a negatively graded DGA \Gamma. The finite dimensionality of the cohomology of \Gamma seems to relate to contractibility of the collection of rational curves. For CY 3...
30
2021-04
罗栗: From quantum group to i-quantum group
报告人：罗栗（华东师范大学数学科学学院副教授）时间：4月30日, 9:00-9:50地点: 数学高等研究院一楼报告厅摘要：As generalizations of quantum groups, the i-quantum groups have recently drawn considerable attention because of its application in Kazhdan-Lusztig theory due to Bao and Wang. In this talk, we will introduce some developments on the study of i-quantum groups. Precisely, we will establish the g...
23
2021-04
Improved Weak Galerkin method for Stokes equations
摘要：A new weak Galerkin method called improved weak Galerkin method (iWG) is introduced for Stokes equations in this work. There is a new definition for weak gradient which is the main novelty. Based on the new gradient, the error estimates in energy norm and L^2 norm for velocity and L^2 norm for pressure are derived for elements with arbitrary combination of polynomials. Several numerical exam...