基础数学系学术报告及微分几何讨论班(第14讲) 题目: Volume comparison with respect to scalar curvature报告人:袁 伟 (中山大学)报告时间:2020年12月24日13:30-14:30报告地点:(腾讯会议ID:585 448 935)摘要:In Riemannian geometry, volume comparison theorem is one of the most fundamental results. The classic results concern volume comparison involving restrictions on Ricci curvature. In this talk...
tyc8722太阳集团学术报告 Landscape analysis of nonconvex models in phase retrieval黄猛 博士(香港科技大学) 报告时间: 2020年12月17日 (星期四) 15:00-16:00腾讯会议 ID:388 971 960 报告摘要:One efficient way to solve phase retrieval problem is through nonlinear least squares, which is a nonconvex optimization with numerous local minimas. However, simple gradient descent algorithms often work rem...
北航tyc8722太阳集团学术报告及偏微分方程讨论班 题目: Euler equations, transonic flows and isometric embeddings 报告人:王德华 教授(匹兹堡大学数学系)报告时间:2020年12月11日上午8:30-9:30 (北京时间)腾讯ID:822 408 546 密码:123456摘要: In this talk, we will discuss the Euler equations of gas dynamics and applications in transonic flows and isometric embeddings in geometry. First the basic theory of...
北航微分几何讨论班(第13讲)题目:Geometry of Maurer-Cartan Elements on Complex Manifolds报告人:陈酌(清华大学)报告时间:2020年12月10日10:30-11:30地点:沙河校区E-405题目:Geometry of Maurer-Cartan Elements on Complex Manifolds摘要:The semi-classical data attached to stacks of algebroids in the sense of Kashiwara and Kontsevich are Maurer-Cartan elements on complex manifolds, which we call exte...
北航数学论坛学术报告Image forecasting using dynamical functional time series models 史建清 (南方科技大学)报告时间:2020年12月10日 (星期四) 14:00-15:00报告地点:北航学院路校区新主楼B208(线下)腾讯ID:865 380 200(线上)摘要: Forecasting of multivariate spatial-temporal images is a challenging problem. In this talk, I will discuss the ideas of using functional principal components analysis a...