26
2023-09
概率统计讨论班—On Structurally Grouped Approximate Factor Models
报告题目：On Structurally Grouped Approximate Factor Models 报告人： 涂云东教授（北京大学） 时间：2023年10月7日（周六）下午3：00开始 地点：浙江大学数学科学学院，海纳苑2幢206 摘要：This paper explores the group structure in large dimensional approximate factor models, which portrays homogeneous effects of the common factors on the individuals that fall into the same group...
25
2023-09
几何分析讨论班--Rigidity theorems about Q-curvature
报告人：李明翔 博士 （南京大学）时间：2023年10月10日 （星期二）上午10:30-11:30 地点：海纳苑2幢105摘要：In this talk, we will introduce some rigidity theorems on complete and conformally flat manifolds with help of Q-curvature. We introduce a new volume entropy to give a sufficient and necessary condition for the ”normal” metric. Meanwhile, with help of geometric measure theory, we give a di...
15
2023-09
几何分析讨论班--Mean field type equations and some related problems
报告人：胡烨耀 教授（中南大学）时间：2023年9月25日 （星期一）下午16:00-17:00 地点：海纳苑2幢102摘要：In this talk, we will first review the resolution of the celebrated Chang-Yang’s conjecture on a sharp Moser-Trudinger type inequality on the two-dimensional sphere. Then we recall the complete theory in dimension one and emphasize the key role played by mean field type equations. Moreover, h...
07
2023-09
Singularity Type for Kahler-Ricci Flow over Minimal Manifolds
报告人：张州教授（悉尼大学）时间：2023年9月18日 （星期一）下午16:00-17:00 地点：海纳苑2幢102摘要： in this talk, we start by describing the history of the study on this Kahler-Ricci flow, usually considered as the easy-sign version. The degenerate setting has been the main interest for the past 2 decades, following Tian’s Program which was later elaborated as Analytic Minimal Model Prog...
01
2023-09
Mimetic Finite Difference Method for Partial Differential Equations
TITLE: Mimetic Finite Difference Method for Partial Differential EquationsSpeaker: Professor Hu Xiaozhe (Tufts University, U.S.A.)ABSTRACT: Numerical simulation of partial differential equation (PDE) models is essential to understand complex applications in science and engineering. When developing discretization methods for solving these PDEs, it is essential to preserve the physica...
31
2023-08
The order complex of cosets in a finite group
题目: The order complex of cosets in a finite group报告人: 孟沆洋（上海大学）时间：2023年9月8日上午9:00-11:00地点：紫金港校区海纳楼2幢203 摘要: In this talk, we will introduce some algebraic topology methods on studying the poset(=partial ordered set) of some cosets of a finite group. Let G be a finite group and X be a subgroup of G. We investigate the topological properties of poset C_X(G) o...