中科院数学与系统科学研究院

数学研究所 

动力系统研讨班报告

 

 

报告人:张建路 博士 (美国马里兰大学帕克分校)

题  目:A survey on the nearly integrable structure in the restricted 3 body problem and its application

时  间:2018.10.29(星期一), 16:00-17:00

地  点:数学院南楼N913室

摘  要:In this talk I will give a preliminary introduction to the trajectory behaviours for the 3 body problem, and exhibit all the nearly integrable setups in certain restricted regimes. Based on these structures, we can estimate the density of collision orbits, and the time of stability for regular orbits. Also some open problems will be exposed as an extension.

--------------------------------------------------------------------------------------------------------------------------------------------------------------报告人:何 辉 副教授 (北京师范大学)

题  目:分支随机游动经验分布的大偏差

时  间:2018.10.30(星期二), 10:30-11:30

地  点:数学院南楼N902室

摘  要:给定一个实轴上的上临界分支随机游动,在一定条件下其所对应的经验分布会收敛到高斯分布。我们主要研究其相应的收敛速度。

--------------------------------------------------------------------------------------------------------------------------------------------------------------报告人:冯仁杰 研究员 (北京国际数学中心)

题  目:Random matrices: new results and open problems

时  间:2018.10.31(星期三), 14:00-15:00

地  点:数学院南楼N913室

摘  要:We will first review some classical results on random matrix theory, then we will present two results on the extreme spacing problems we solved recently with Dongyi Wei, we will also talk about some open problems. The talk is very elementary and accessible to all students with basic knowledge on probability.

--------------------------------------------------------------------------------------------------------------------------------------------------------------报告人:John Hubbard (Cornell)

题  目:A new construction of pseudo-Anosov homeomorphisms

时  间:2018.10.31(星期三), 16 :00-17:00

地  点:数学院南楼N820室

摘  要:I (with Ahmad Rafiki and Tom Schang) have a description of all pseudo-Anosov homeomorphisms that fix singularities and leaves emanating from them) in terms of something we call “ordered block permutations”.   It has allowed us to list the first 7000 or so such pseudoAnosov homeomorphisms, showing in particular that only about 10% fail to have totally real dilatations.

附件
相关文档