微分动力系统学术报告报告题目: Saturated properties for amenable group actions报告人:任宪坤(重庆大学)时间: 2021-06-11 9:00-10:00地点: 沙河校区,E402摘要: In this talk, we will discuss upper capacity entropy, packing entropy and Bowen entropy on saturated subsets for amenable group actions with weak specification property. We give three different variational principles of these three entrop...
数学学院学术报告Analysis Seminar 2021-06-10报告题目: 多元 Fourier分析中的问题及重要进展报告人: 燕敦验(中国科学院大学)时间: 2021年6月10日(周四)下午16:00-17:00地点: 沙河主楼E404摘要: 这个报告系统介绍多元Fourier分析发展过程中的主要问题、相关猜想及其重要进展,包括我国学者的研究成果。 报告人简介: 燕敦验,中国科学院大学学术委员会委员、二级教授、博士生导师, 本科部部长兼书记。1984年考入北京师范...
数学科学学院统计与运筹系 学术报告 Discrimination of quantum states under locality constraints in the many-copy setting 俞能昆(悉尼科技大学) 报告时间: 2021-6-8 10:00-11:00 am腾讯会议 ID:371 511 728报告摘要:We study the discrimination of a pair of orthogonal quantum states in the many-copy setting. This is not a problem when arbitrary quantum measurements are allowed, as then the states can...
An Open Problem on Sparse Representations in Unions of Bases 沈益 教授(浙江理工大学) 报告时间: 2021年6月8日 (星期二) 下午2:30-4:00腾讯会议 ID:817 991 869报告摘要:We consider sparse representations of signals from redundant dictionaries which are unions of several orthonormal bases. The spark introduced by Donoho and Elad plays an important role in sparse representations. However, numerica...
数学学院学术报告Analysis Seminar 2021-06-03 报告题目: Suppression of chemotactic explosion by mixing报告人:徐霄乾(昆山杜克大学)时间:2021-06-03 9:30-10:30地点:沙河主楼 E 502摘要:Keller-Segel equation is one of the most studied PDE models of processes involving chemical attraction. However, solution of Keller-Segel equation can exhibit dramatic collapsing behavior, where the population ...
数学科学学院学术报告 Perturbed Amplitude Flow for Phase Retrieval 高冰(南开大学数学科学学院) 报告时间:2021年6月1日星期二 下午3:00-4:00会议地点:沙河E404(线下); 腾讯会议ID:127 416 879(线上)报告摘要: In this talk, we propose a new non-convex algorithm, Perturbed Amplitude Flow (PAF), for solving the phase retrieval problem, i.e., the reconstruction of a signal x∈Hn (H=R or C) from phas...