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
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...
16
2021-04
数学所讲座-----A revisit to the affine Bernstein theorem
报告人：周斌（北京大学）时间：2021年4月16日（周五），14：00-15：00地点：工商楼200-9摘要：In this talk, I will first review the Bernstein theorem for a class of fourth order equations of Monge-Ampere type, including the affine maximal surface equation and Abreu’s equation. The famous affine Bernstein theorem, also called Chern’s conjecture, was first proved by Trudinger-Wang in dimension two in 2...
14
2021-04
A classification of minimal highest weight modules for classical types
主讲人: 白占强（苏州大学） 时间：4月14日，9:30-10:30地点：浙江大学紫金港校区东七教学楼数学高等研究院一楼报告厅摘要:The highest weight modules with minimal Gelfand-Kirillov dimension plays an important role in the study of representations of Lie groups and Lie algebras.In this talk，we will give a characterization for these modules for all classical types. Our characterization is given by...