数学科学学院学术报告--- 分析与偏微分方程讨论班(2023春季第6讲) Global existence for the quadratic Dirac equation in two and three space dimensions张倩 (北京师范大学)时间:6月26日(周一)10:30-11:30 地点:#腾讯会议:214-478-451https://meeting.tencent.com/dm/n9MmqVQosonX 摘要: In this report, we study global existence and pointwise decay estimates for the nonlinear Dirac equation with quadratic no...
数学科学学院学术报告--- 分析与偏微分方程讨论班(2023春季第13讲) Higher regularity of the free boundary in the obstacle problem for the fractional heat operator.唐 (北京大学)时间:6月26日(周一)9:30-10:30 地点:#腾讯会议:214-478-451https://meeting.tencent.com/dm/n9MmqVQosonX 摘要: In this talk, we introduce higher regularity of the free boundary in the obstacle problem for the fractional heat ...
数学科学学院学术报告--- 分析与偏微分方程讨论班(2023春季第12讲) 题目: Uniformizing Gromov hyperbolic spaces and Busemann functions报告人: 周青山 副教授 (佛山科学技术学院)时间:2023-06-25 10:00-11:00 (周日上午) 地点: 腾讯会议:922-790-725https://meeting.tencent.com/dm/whofQ5sbFcD1摘要: In this talk, we will introduce some facts about hyperbolic spaces in the senseof Gromov. Then we will rec...
数学科学学院学术报告报告题目: Global and Local Convergence-Rate Analysis of an Inexact Newton Augmented Lagrangian Method for Zero-One Composite Optimization报告人:戚厚铎(HOUDUO QI) 教授 香港理工大学报告时间:2023年6月17日(周六) 下午16:30-17:30报告地点:北航沙河校区主楼E404线上腾讯会议号:278-872-959Abstract:Zero-One Composite Optimization (0/1-COP) is a prototype of nonsmooth, nonconvex ...
数学科学学院学术报告--- 分析与偏微分方程讨论班(2023春季第11讲) Extremals for Fourier extension type inequalities on fractional surfaces邸博宁 (中国科学院大学)时间与地点:2023年6月20日(周二)10:00-11:00 沙河主楼E502摘要: Fourier extension type inequalities (Strichartz type inequalities) are dual forms of Fourier restriction type inequalities. In this talk, I will present some recent results on...
基础数学系学术报告 --微分几何讨论班(2023年第2讲)题目:A brief introduction to researches on scalar curvature报告人:朱锦天 博士(北京大学)时间:2023年6月16日 下午4:10-5:10地点:沙河主E602摘要:In this talk, we will review previous researches on scalar curvature from the viewpoints of largeness and Gauss-Bonnet formula, where aspherical conjecture and Gauss-Bonnet inequality will be mentioned...