25

2023-05

Some rigidity theorems on conformal deformation

题目: Some rigidity theorems on conformal deformation报告人：来米加 长聘副教授（上海交通大学）时间：6月1日，10:30-11:30地点：海纳苑2幢202摘要: In this talk, I shall discuss some rigidity theorems on conformal deformations. The main discovery here is that on a complete noncompact manifold with suitable curvature assumption, then one cannot increase the Schouten tensor via conformal deformation. The...

20

2023-09

Steinberg’s cross-section of Newton strata

数论与表示论讨论班Number Theory and Representation Theory SeminarTime: May 31, Wednesday, 15:00-16:00 Venue: 数学高等研究院Lecture HallSpeaker: 聂思安Sian Nie (Academy of Mathematics and Systems Science)Title: Steinberg’s cross-section of Newton strataAbstract: Let G be a simply connected semisimple group of rank r over an algebraically closed field. Steinberg has associated to each minimal lengt...

20

2023-09

Harder-Narasimhan stratification in p-adic Hodge theory

数论与表示论讨论班Number Theory and Representation Theory SeminarTime: May 31, Wednesday, 16:15-17:15 Venue: 数学高等研究院Lecture HallSpeaker: 陈苗芬Miaofen Chen (East China Normal University)Title: Harder-Narasimhan stratification in p-adic Hodge theoryAbstract: we will talk about the construction of Harder-Narasimhan stratification on the B_{dR}^+-Grassmannian  and study its basic geometri...

20

2023-09

RC-positivity and the geometry of compact complex manifolds

杰出青年数学家系列讲座Time: June 1, Thursday, 16:00-17:00 Venue: 海纳苑2幢210室Speaker: 杨晓奎 Xiaokui Yang (Tsinghua University)Title: RC-positivity and the geometry of compact complex manifolds. Abstract: In this talk we will present some recent progress on the geometry and topology of compact complex manifolds with RC-positive tangent bundles.简介杨晓奎，清华大学数学科学系教授。2012年毕业于美国...

21

2023-09

On the Moduli Description of a Class of Unitary Shimura Varieties

  

20

2023-09

非定常Ginzburg-Landau方程的保结构有限元算法

报告题目：非定常Ginzburg-Landau方程的保结构有限元算法报告摘要：对于时间规范下的非定常Ginzburg-Laudau 方程，我们提出了一类物理边界条件下的非线性有限元算法，避免了因额外边界条件导致的非物理数值现象。对该非线性格式我们设计了数值有效的预条件子，并分析了其有效性，将该非线性格式的计算量降至线性解耦格式计算量同一量级的同时保证了数值能量的稳定性。我们还提出了一类保持无条件能量耗散和离散极值原理的解耦...

20

2023-09

Power contraction of RAS with local impedance problems for the Helmholtz equation

报告题目：Power contraction of RAS with local impedance problems for the Helmholtz equation报告摘要：The   Helmholtz equation is notoriously difficult to solve, especially for the case   of high wavenumber. The Restricted Additive Schwarz preconditioner with local   impedance problems (often called the ORAS method) is arguably the most   successful one-level...

21

2023-09

限制性框架下Schrödinger算子的谱分析

Title: 限制性框架下Schrödinger算子的谱分析Speaker:苗长兴（北京应用物理和计算数学研究所）Time:   2023年5月25日 9:30-11:00Location:腾讯会议 970741100Abstract:研究Schrödinger算子对应的散射理论有两种途径,其一是基于迹定理的加权空间框架,形成了常用的经典研究方法; 其二基于超曲面或余维为k光滑流形上Stein-Tomas限制性定理,形成了在限制性框架下研究Schrödinger算子谱理论的现代方法。报告重点介绍限制...

20

2023-09

Numerical PDEs for Fluid-Structure Interaction (FSI) Problems

  

20

2023-09

Randomized algorithms for fully online multiprocessor scheduling with testing

报告题目：  Randomized algorithms for fully online multiprocessor scheduling with  testing.报告人：龚铭炀（加拿大阿尔伯塔大学）报告摘要：  Multiprocessor scheduling is one of the famous combinatorial optimization  problems that receives numerous studies. Recently, its testing variant is  investigated by several research groups, in which each job Jj arrives with a...

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