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tyc8722太阳集团学术报告 Efficiency of Smooth Approximation Methods for Weakly Convex Optimization 邓琪（上海交通大学） 报告时间：2026年1月19日 星期一 下午16：30-17：30报告地点：沙河校区E806报告摘要：Standard complexity analyses for weakly convex optimization rely on the Moreau envelope technique proposed by Davis and Drusvyatskiy (2019). The main insight is that nonsmooth algorithms, such as proxi...
tyc8722太阳集团学术报告 Model Consistency of Iterative Regularization 梁经纬（上海交通大学） 报告时间：2026年1月19日 星期一 下午15：30-16：30报告地点：沙河校区E806报告摘要：Regularization is vital in inverse problems to ensure well-defined solutions and control over noise. In particular, we study “model consistency”, which indicates that the reconstructed solution remains robust to small perturb...
tyc8722太阳集团学术报告 Loss Landscape and Error Bound Analysis of Regularized Deep Matrix Factorization 江如俊（复旦大学） 报告时间：2026年1月19日 星期一 下午14：30-15：30报告地点：沙河校区E806报告摘要：Deep matrix factorization (DMF) is a fundamental model underlying many applications, including deep linear neural networks. Despite its simplicity, the regularized DMF problem exhibits a highly no...
微分几何讨论班（2025秋第9讲）An introduction to 2D nonlinear sigma models吴瑞军 教授（北京理工大学） 时间：2026年1月8日 11:10-12:10地点：沙河主E806摘要：Nonlinear sigma models correspond the harmonic maps and its generalizations in geometry. The space of the solutions in such models provide geometric invariants of the underlying manifolds. We will try to sketch the construction of some 2D super...
微分几何讨论班（2025秋第8讲）Geometric structure and existence of reducible spherical conical metrics 魏志强 教授（河南大学） 时间：2026年1月8日 10:05-11:05地点：沙河主E806摘要：In this talk, we show that on any compact Riemann surface, a reducible spherical conical metric can be partitioned into finitely many pieces by cutting along suitable geodesics, each of which is isometric to a football....
微分几何讨论班（2025秋第7讲）HCMU metrics, Reducible CSC-1 metrics and Polynomial metrics吴英毅 教授（中国科学院大学） 时间：2026年1月8日 9:00-11:00地点：沙河主E806摘要：In this talk, we will first review definitions, properties and constructions of HCMU metrics and reducible CSC-1 metrics. As a generaliztion of HCMU metric and reducible CSC-1 metric, we will introduce polynomial metric. We wil...
