学术报告
-
Fake Surface and Andrews-Curtis Conjecture题目:Fake Surface and Andrews-Curtis Conjecture报告人:邱杨 特聘研究员(南开大学陈省身数学研究所)地点:致远楼108室时间:2025年4月17日 10:00-11:00摘要:The Andrews-Curtis conjecture states that every balanced presentation of the trivial group can be reduced to the standard one with a sequence of elementary transformations. We try to study this conjecture through a family of special 2-complex...邱杨 特聘研究员(南开大学陈省身数学研究所)致远楼108室2025年4月17日 10:00-11:00
-
Data Integration Using Covariate Summaries from External Sources题目:Data Integration Using Covariate Summaries from External Sources报告人: 张宇谦 助理教授(中国人民大学)地点: 致远楼101室时间:2025年4月9日 10:00-11:30摘要:In modern data analysis, information is frequently collected from multiple sources, often leading to challenges such as data heterogeneity and imbalanced sample sizes across datasets. Robust and efficient data integration methods a...张宇谦 助理教授(中国人民大学)致远楼101室2025年4月9日 10:00-11:30
-
寻找第四类数值方法题目:寻找第四类数值方法报告人:邵嗣烘 教授 (北京大学)地点:致远楼101室时间:2025年4月3日 上午10:00摘要:微分方程数值解近百年的发展汇成了三大类基本的数值离散方法:50年代的有限差分,60年代的有限元和70年代的谱方法。这三类方法的收敛性都依赖于解的正则性,要达到最优的收敛阶需要精心调配网格,导致在求解高维问题时会遇到维度灾难。当数据和智能科学的热潮涌来时,情况变得更糟糕,因为可能再也没有微分方程可...邵嗣烘 教授 (北京大学)致远楼101室2025年4月3日 上午10:00
-
Frenkel-Kontorova Type Models in 1D Periodic and Aperiodic Media题目:Frenkel-Kontorova Type Models in 1D Periodic and Aperiodic Media报告人:苏喜锋 副教授 (北京师范大学)地点:致远楼108室时间:2025年3月20日 15:30-16:30摘要:We will first introduce some basic settings for Frenkel-Kontorova type models in solid state physics and survey about the related both classical and quantum models.We then focus on deposition of one dimensional chains of interacting pa...苏喜锋 副教授 (北京师范大学)致远楼108室2025年3月20日 15:30-16:30
-
Nearly Geodesic Surfaces are Filling题目:Nearly Geodesic Surfaces are Filling报告人:韩肖垄 助理教授 (上海数学与交叉学科研究院和复旦大学)时间:2025年3月20日 10:45-1145地点:致远楼108室摘要:A surface S in a manifold M is filling if S cuts M into contractible components. We prove for any closed hyperbolic 3-manifold M , there exists a K”> 0 such that every homotopy class of K-quasi-Fuchsian surfaces with 1<K ≤ K” is filling....韩肖垄 助理教授 (上海数学与交叉学科研究院和复旦大学)致远楼108室2025年3月20日 10:45-11:45
-
Linearly Growing Injectivity Radius in Negatively Curved Manifolds with Smal...题目: Linearly Growing Injectivity Radius in Negatively Curved Manifolds with Small Critical Exponent报告人:Assistant Professor Ilya Gekhtman (Technion-Israel Institute of Technology)时间:2025年3月20日 9:30-10:30地点:致远楼108室 摘要: Let X be a proper geodesic Gromov hyperbolic space whose isometry group contains a uniform lattice \Gamma. For instance, X could be a negatively curved contr...Assistant Professor Ilya Gekhtman (Technion-Israel Institute of Technology)致远楼108室2025年3月20日 9:30-10:30
-
Ergodic Theory of Lorenz attractors题目:Ergodic Theory of Lorenz attractors报告人:王晓东 教授 (上海交通大学)时间:2025年3月7日 10:00-11:00地点:致远楼101室Abstract:The Lorenz attractor is one of most classical models of chaotic dynamical systems and has drawn lots of interest since it was introduced in the 1960s. In this talk, we focus on the ergodic measure space of Lorenz attractors and study its ergodic theory including...王晓东 教授 (上海交通大学)致远楼101室2025年3月7日 10:00-11:00
-
Dynamic Adaptive Gridding in Numerical Simulation of Selected Processesin CO2...题目:Dynamic Adaptive Gridding in Numerical Simulation of Selected Processesin CO2 Storge in Subsurface Aquifers and Fracturing with Consideration报告人:Professor Abbas Firoozabadi (Department of chemical and BiomolecularEngineering, Rice University)地点:致远楼108室时间:2025年2月24日 10:00-11:30摘要:CO2 has gas like viscosity, liquid-like density, often low surface energy with rocks. i...Professor Abbas Firoozabadi (Department of chemical and BiomolecularEngineering, Rice University)致远楼108室2025年2月24日 10:00-11:30