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14

2024-05

辛拓扑与物理讨论班——$BV_\infty$ quantization of (-1)-shifted derived Poisson manifolds

报告人：徐平（教授，宾夕法尼亚州立大学）时间：2024年5月28日，14:00-16:00 地点：海纳苑2幢102摘要：In this talk, we will give an overview of (-1)-shifted derived Poisson manifolds in the $C^\infty$-context, and discuss the quantization problem. We describe the obstruction theory and prove that the linear (-1)-shifted derived Poisson manifold associated to any $L_\infty$-algebr...

14

2024-05

分析和微分方程讨论班——关联几何以及它在调和分析中的应用

报告人：曹桢斌（河南省科学院）时间：2024年5月15日，9:30-10:30地点：海纳苑2幢1120摘要：关联几何是一门研究点线，点圆，点和一般曲线的关联关系的学科。这门学科的方法和相关理论在许多方向，诸如调和分析，几何测度论，加性组合里的相关问题研究有重要应用。在这个报告中，我将会介绍关联几何的主要猜想，主要定理，以及主要方法，并介绍它们和调和分析里相关问题的联系。联系人：王梦 (mathdreamcn@zju.edu.cn)

11

2024-05

动力系统讨论班——A regularization theorem for bounded-degree self-maps

报告人：杨舍(北京大学)时间：2024年5月16日（星期四），下午4:00-5:00地点：海纳苑2幢102摘要：We prove that over an algebraically closed field of arbitrary characteristic, a bounded-degree self-map of an irreducible projective variety can be regularized. That is to say, there exists another projective variety birational to the original one such that the bounded-degree self-map become...

11

2024-05

动力系统讨论班——Likely Intersections for Forward Orbits of Curves

报告人：Jit Wu Yap (哈佛大学)时间：2024 年5 月16 日（星期四），下午3:00-4:00地点：海纳苑2 幢102摘要：Let $f,g$ be two polynomials of degree $d > 1$ and let $\varphi = (f,g)$ be the endomorphism acting on $P^1 x P^1$. Given two curves $C$ and $C'$, we expect that the forward iterates of $C...

10

2024-05

概率统计讨论班——Extension and subspaces of Dirichlet forms

报告人：应坚刚(复旦大学)时间：2024年5月10日下午14:00-15:00地点：海纳苑2幢105摘要：Dirichlet form is a symmetric bilinear form on L^2 space which satisfies so-called Markov property. It is known that a regular Dirichlet form, a Dirichlet form with dense continuous functions, corresponds to a symmetric Markov process. In this way, the bridge between analysis and probability was established. In this ...

06

2024-05

概率统计讨论班——Navigating the Challenges of Causal Inference: A Focus on Longitudinal Data

报告人：Andrew Ying(Google, Data Scientist)时间：2024年5月10日下午15:10-16:10地点：海纳苑2幢105摘要：Causal inference is a rapidly evolving discipline with applications across various fields. The gold standard for causal inference is a double-blinded randomized controlled trial (RCT), which ensures exchangeability between treatment and control groups. However, observational data are often used as ...

30

2024-04

辛拓扑与物理讨论班——On a kind of generalized Frobenius manifolds and the associated integrable systems

报告人：周春辉（教授，中国科学技术大学）时间：2024年5月7日，下午14:00地点：海纳苑2幢102室摘要：In this talk, we will discuss a kind of integrable systems whose associated Frobenius manifolds have no Euler vector fields. They can be viewed as the almost dualities of the Frobenius manifolds associated with extended Toda hierarchy and Ablowitz-Ladik hierarchy. We will also show how to use this result...

30

2024-04

浙大-西湖几何分析讨论班——Willmore-type inequality for closed hypersurfaces in complete manifolds with Ricci curvature bounded below

26

2024-04

代数几何讨论班——Hassett-Keel program in genus four

报告人：刘雨晨（美国西北大学）时间：2024年4月29日，上午9:00-10:00地点：线上 Zoom: 989 9166 4720，https://bccte.zoom.us/j/98991664720?pwd=bzgrb2dDWXpQV0Z5eElGTzBMaVNYdz09 密码: moduli摘要:The Hassett-Keel program aims to find modular meanings for the minimal model program of the Deligne-Mumford compactification of moduli space of curves. The first three steps of the Hassett-Keel progra...

26

2024-04

分析和微分方程讨论班——A positive mass theorem for fractional GJMS operators

报告人：王芳（上海交通大学）时间：2024年4月26日，14:30-15:30地点：海纳苑2幢1120摘要：In this talk, I will first derive some comparison formula between fractional Q-curvatures of different order. Based on this, we can prove a positive mass theorem for fractional GJMS operators, on locally conformally flat manifold as the conformal infinity of some Pincare-Einstein manifold. This is joint work with ...

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