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北航数学论坛学术报告-----微分几何讨论班(2023秋季第4讲) 题目: Sobolev inequalities and regularites of linearized complex Monge-Ampere and Hessian equations报告人: 周 斌 教授 （北京大学）时间：2023-9-19 10：45-11：45 地点：沙河主楼E404摘要: In this talk, we study the regularity of solution to the linearized complex Monge-Amp\`ere and Hessian equations when the complex $k$-Hessian is bounded from...
北航数学论坛学术报告 -----微分几何讨论班(2023秋季第3讲)题目: Free boundary problems in optimal transportation报告人: 刘佳堃 教授 （澳大利亚卧龙岗大学）时间：2023-9-19 9：30-10：30 地点：沙河主楼E404摘要: In this talk, we introduce some recent regularity results of free boundary in optimal transportation. Particularly for higher order regularity, when densities are Hölder continuous and do...
数学科学学院学术报告--- 分析与偏微分方程讨论班(2023秋季第2讲) Recent progress on Schatten classes and Riesz transform commutators范智杰 (广州大学)时间：9月13日（周三）下午3:00-4:00 地点：https://meeting.tencent.com/dm/4IXRH1GEtrk2#腾讯会议：508-974-726摘要: This talk is about recent progress on Schatten classes and non-Euclidean Riesz transform commutators. By developing a new approach to bypas...
数学科学学院学术报告--- 分析与偏微分方程讨论班(2023秋季第3讲) Failure of endpoint regularity of Radon transforms石坐顺华 (中南大学)时间：9月13日（周三）下午2:00-3:00 地点：https://meeting.tencent.com/dm/4IXRH1GEtrk2 #腾讯会议：508-974-726摘要: In this talk, we shall present failure of endpoint regularity of Radon transforms with certain polynomial phases.报告人简介: 石坐顺华，中南大学副教授，研...
数学科学学院统计与运筹系 学术报告 Optimal estimation of Gaussian mixtures via denoised method of moments 杨朋昆 助理教授清华大学 报告时间：2023年9月22日 (星期五) 下午3：00-4：00报告地点：沙河主E706报告摘要：The Method of Moments is one of the most widely used methods in statistical inference, obtained by solving the system of equations that match the population and estimated moments. However, ...
学术报告 A Mini-Batch Proximal Stochastic Recursive Gradient Algorithm with Diagonal Barzilai–Borwein Stepsize 于腾腾（北京农学院） 报告时间：2023年9月9日星期六 15：15-16：00报告地点：沙河主楼E405报告摘要: Many machine learning problems can be formulated as minimizing the sum of a function and a non-smooth regularization term. Proximal stochastic gradient methods are popular for solving such ...
