微分动力系统学术报告报告题目: Entropies and volume growth of unstable manifolds报告人:臧运涛(华东师范大学)时间: 2021-07-09 16:30-17:10 地点: 沙河校区,E404摘要: Let $f$ be a $C^2$ diffeomorphism on a compact manifold. Ledrappier and Young introduced entropies along unstable foliations for an ergodic measure $\mu$. We relate those entropies to covering numbers in order to give a new upper ...
微分动力系统学术报告报告题目: On unstable entropy of diffeomorphisms报告人:吴伟胜(厦门大学)时间: 2021-07-09 15:40-16:20 地点: 沙河校区,E404摘要:Given a $C^2$ diffeomorphism, Ledrappier and Young have studied the entropy along different hierarchy of unstable manifolds and given a celebrated formula for it. For $C^1$ partially hyperbolic diffeomorphisms, we introduce a definition for unsta...
微分动力系统学术报告报告题目: Density and openness properties of non-uniformly hyperbolic diffeomorphisms报告人:梁超 (中央财经大学)时间: 2021-07-09 14:00-14:40 地点: 沙河校区,E404摘要: In this talk, I will introduce some results on the $C^r$-topological properties (especially, density and openness) of the subset of nonuniformly hyperbolic diffeomorphisms in a certain class of partia...
基础数学系报告大学数学课程思政建设的几点做法玄祖兴(北京联合大学)报告时间:10:00-11:00,2021-7-7(星期三)报告地点: 北航沙河校区E404内容简介:我们将从课程思政建设的背景讲起,介绍我们前期在大学数学课程思政建设中的一些做法,包括体制机制建设及一些案例的讲解。报告人简介:玄祖兴,博士、北京联合大学教授、博士生导师、北京交叉科学学会副秘书长、数理与交叉科学研究院院长、数理部副主任(主持工作),曾...
数学科学学院学术报告 On Perturbation Analysis for Optimization Problems张立卫教授(大连理工大学) 报告时间: 2021年7月5日 (星期一) 上午10:00-11:00报告地点 :沙河主楼E404Abstract. This report tries to give a survey about perturbation analysis for optimization problems. It includes the following parts:Various notions of stability for optimization problems;Variational criterions for various stabil...
数学学院学术报告Analysis Seminar 2021-06-28报告题目: The Khavinson conjecture and the Schwarz-Pick inequality for harmonic functions报告人: 刘聪文 (中国科学技术大学)时间: 2021-06-28 10:00-11:00 地点: 腾讯会议 ID:986 895 335摘要: In this talk, we present a proof of the Khavinson conjecture which states that, for bounded harmonic functions on the unit ball of $\mathbb{R}^n$, the sharp const...