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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...

26

2021-04

Crossing probability in Gaussian Free Field

报告人: Professor Hao Wu （Tsinghua University）时间：2021 年 4 月 26 日下午 3:00 开始地点：浙江大学（玉泉校区）数学科学学院逸夫工商楼 200-9 Abstract: Two-dimensional Gaussian free field (GFF) is a natural 2D time analogue of Brownian motion. It is also ...

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...

23

2021-04

Some space-time methods for solving time-dependent problems

摘要：In this talk, we first give an overview of several important time parallel methods including parallel and waveform relaxation algorithms. Then, we introduce the space-time multiplicative Schwarz method for solving a system arising from the discretization of the linear parabolic equations. We obtain lower and upper bounds for the spectrum of the preconditioned operator and their dependency on...

23

2021-04

Positive mass theorems of ALF and ALG manifolds

报告人：史宇光教授（北京大学数学学院）时间：2021年4月23日（周五）下午14:00-15:00 地点：工商楼200-9会议室摘要: In this talk, we will prove positive mass theorems for ALF and ALG manifolds with model spaces $R^{n-1}\times S^1$ and $R^{n-2}\times T^2$ respectively in dimensions no greater than 7. Different from the compatibility condition for spin structure in T...

23

2021-04

洛伦兹几何与爱因斯坦场方程

报告人：陈兵龙教授（中山大学数学科学学院）时间：2021年4月23日上午10:30-11:30地点：工商楼200-9教室题目：洛伦兹几何与爱因斯坦场方程摘要：在本报告中，我们将综述几何分析方法在洛伦兹几何及爱因斯坦场方程方面的部分进展。联系人：盛为民（shengweimin@zju.edu.cn ）

23

2021-04

数学所讲座-----SLE and Conformal Restriction Measures

报告题目：SLE and Conformal Restriction Measures报告人：王跃飞教授(深圳大学)时间：2021年4月23日（星期五）上午9：30-10：30 地点：玉泉校区邵科馆211会议室摘要： We will first talk about the Schramm Loewner equation, and then talk about its applications to conformal restriction measures. This is a joint work with Yong Han and Michel Zinsmeister.欢迎各位老师同学参加。联系人：尹永成（yin@zju.edu....

22

2021-04

Online Updating Statistics for Heterogenous Updating Regressions via Homogenization Techniques

报告人：林路教授（山东大学）报告题目：Online Updating Statistics for Heterogenous Updating Regressions via Homogenization Techniques报告时间：2021年04月22日周四下午3:30地点：紫金港校区行政楼1417主办单位：浙江大学数据科学研究中心、浙江大学数学科学学院摘要：We propose a homogenization strategy to represent the heterogenous models that are gradually updated in the process of data streams. With ...

22

2021-04

A Central Limit Theorem for Sets of Probability Measures

报告人：陈增敬教授（山东大学）报告题目：A Central Limit Theorem for Sets of Probability Measures报告时间：2021年04月22日周四下午2:30地点：紫金港校区行政楼1417主办单位：浙江大学数据科学研究中心、浙江大学数学科学学院摘要：We prove a central limit theorem for a sequence of random variables whose means are ambiguous and vary in an unstructured way. Their joint distribution is described...

20

2021-04

Inviscid limit problem in the boundary layer theory

报告题目：Inviscid limit problem in the boundary layer theory报告人：王渝西研究员(四川大学)时间：2021年4月20日（星期二）上午9：50-12：00地点：玉泉校区欧阳楼314摘要： We divide this talk into two parts. In the first part, we introduce the background of the boundary theory and the motivation of studying the inviscid limit problem. In the second part, we deduce the equation of the boundary layer and...

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