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21

2023-09

限制性框架下Schrödinger算子的谱分析

Title: 限制性框架下Schrödinger算子的谱分析Speaker:苗长兴（北京应用物理和计算数学研究所）Time: 2023年5月25日 9:30-11:00Location:腾讯会议 970741100Abstract:研究Schrödinger算子对应的散射理论有两种途径,其一是基于迹定理的加权空间框架,形成了常用的经典研究方法; 其二基于超曲面或余维为k光滑流形上Stein-Tomas限制性定理,形成了在限制性框架下研究Schrödinger算子谱理论的现代方法。报告重点介绍限制...

21

2023-09

A family of Monge-Ampère type operators converging to sigma_k, and their Minkowski problems

21

2023-09

A Nakai-Moishezon type criterion for supercritical deformed Hermitian-Yang-Mills equation

Title: A Nakai-Moishezon type criterion for supercritical deformed Hermitian-Yang-Mills equationAbstract: The deformed Hermitian-Yang-Mills equation is a fully nonlinear elliptic PDE on Kahler manifolds, which can be regarded as the complex analogue of the Lagrangian equation. In this talk, I will present a Nakai-Moishezon type criterion for supercritical deformed Hermitian-Yang-Mills equation, wh...

20

2023-09

D-finiteness, Rationality, and Height

报告题目： D-finiteness, Rationality, and Height报告人：陈绍示教授（中国科学院数学与系统科学研究院）报告时间：2023年5月1日（星期一） 16:00-17:00报告地点：紫金港校区海纳苑2幢205教室摘要：D-finite functions are solutions of homogeneous linear differential equations with rational function coefficients. This is an important class of special functions since it appears ubiquitously in algebra...

20

2023-09

D-modules, motivic integrals and hypersurface singularities

代数几何与辛几何系列学术报告Title: D-modules, motivic integrals and hypersurface singularities 报告人：吴磊（浙江大学数学学院长聘副教授）时间：2023年4月6日星期四下午1:45-2:45地点：浙大紫金港校区海纳苑2幢210Abstract:This talk is an invitation to the study of monodromy conjecture for hypersurfaces in complex affine spaces. I will recall two different ways to understand singularities of hypersurfac...

20

2023-09

Mapping class groups in symplectic geometry: from packing problem to moduli spaces

代数几何与辛几何系列学术报告Title: Mapping class groups in symplectic geometry: from packing problem to moduli spaces报告人：吴惟为（浙江大学数学学院长聘副教授）时间：2023年4月6日星期四下午2:45-3:45地点：浙大紫金港校区海纳苑2幢210Abstract: Symplectic packing problem is one of the central theme in symplectic geometry, after Gromov’s celebrating non-squeezing theorem. Many works have ...

20

2023-09

Singular Abreu equations and linearized Monge-Ampère equations with drifts

20

2023-09

Distributed Statistical Learning via Refitting Bootstrap Samples

报告题目：Distributed Statistical Learning via Refitting Bootstrap Samples报告人：竺紫威（University of Michigan）时间：2023年04月17日（星期一）下午13:30-3:00地点：紫金港校区海纳苑2幢205教室摘要：In this talk, I will introduce a one-shot distributed learning algorithm via refitting Bootstrap samples, which we refer to as ReBoot. Given the local models that are fit on multiple independent sub...

20

2023-09

Multi-parameter quantum groups via quantum quasi-symmetric algebras

报告人：胡乃红教授（华东师范大学）时间：2023年4月15日14:00-14:50地点：腾讯会议ID：113-931-753摘要：In this talk we will recall some background theories which are related to our research interestings, especially reconstruction theory. This is a joint work with Yunnan Li and Marc Rosso.

20

2023-09

Thurston and McMullen rigidity theorems revisited: new proof and generalization

报告题目：Thurston and McMullen rigidity theorems revisited: new proof and generalization报告人：冀诸超教授（西湖大学）时间：2023年04月20日（星期四）14:10-15:00地点：紫金港校区海纳苑2幢312教室摘要：This is a joint work with Junyi Xie. In 1987, McMullen proved a remarkable rigidity theorem which asserts that aside from the flexible Lattès family, the multiplier spectrum of periodic points determin...

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