学术报告Global wellposedness of 3-D incompressible inhomogenenous Navier-Stokes equations郝田田 (北京大学)时间:12月11日(周一)下午15:00-16:00地点:沙河校区主楼E602摘要: In this talk, we will present the global well-posedness of the 3-D incompressible inhomogeneous Navier-Stokes equations with initial data in a critical regularity framework. More precisely, we consider initial density close to...
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27讲)Removability of singularities and superharmonicity for some fractional Laplacian equations敖微微 (武汉大学)时间:12月13日(周三)下午14:00-15:00地点:#腾讯会议:496-907-431点击链接直接加入会议:https://meeting.tencent.com/dm/6QBXbNXdDFiM摘要: In this talk we will present some qualitative properties ( including removable singulirities...
北航数学论坛学术报告-----微分几何讨论班(2023秋季第7讲)题目: 现代计数几何简介报告人:郭 帅 教授 (北京大学)时间:2023-12-15 10:00-11:00 地点:沙河主楼E404摘要:计数几何,其起源可以追溯到古希腊时代,这是一门专注于研究特定几何问题(通常与相对位置有关)的解的数量和性质的数学分支。另一方面,物理学家在上世纪90年代对物理中的超弦理论进行研究时,提出了一类特殊的弦对偶——镜像对称。这两种看似截然不...
数学科学学院统计与运筹系学术报告Local geometry determines global landscape in low-rank factorization for synchronization凌舒扬 长聘助理教授(上海纽约大学)报告时间: 2023年12月20日 (星期三) 上午10:00-11:00 报告地点:沙河主E404报告摘要:The orthogonal group synchronization problem, which focuses on recovering orthogonal group elements from their corrupted pairwise measurements, encompasses exa...
基础数学系学术报告——代数几何讨论班题目:Slope inequality for fibered threefolds over curves报告人:胡勇 教授(上海交通大学)时间:2023年12月08日 14:00-15:30地点:沙河校区-E座-404西摘要: In this talk, we will introduce the slope inequality for fibered varieties over curves. We will prove that the optimal lower bound of the slope of fibered threefolds over curves is 4/3. If time permits, we wi...
学术报告题目:The geometry of fine curve graph报告人:谭东 (南京邮电大学)时间:2023年12月1日(星期五)下午 16:00-17:00地点:沙河校区主楼E306摘要:In this talk, we will discuss some topologic properties of fine curve graph, including the connectivity of spheres and linear connectivity of Gromov boundary. This work is jointed with Yongsheng Jia and Yushen Long.报告人简介:谭东,博士毕业于中山大...