报告题目:Cuntz semi-groups in simple Z-stable C*-algebras

报告人:林华新 (美国Oregon大学终身教授,华东师范大学紫江讲座教授)

报告时间:8月6日9:30--10:30

报告地点:精正楼二楼报告厅

摘要:We study Cuntz semgroups and -groups of stably projectionless simple C*-algebras. A comparison property for these C*-algebras are established.We also discuss the range of the Elliott invariant of stably projectionless simple C*-algebras。



报告题目:The Novikov conjecture, the group of volume preserving diffeomorphisms, and Hilbert-Hadamard spaces

报告人:Sherry Gong (加州大学洛杉矶分校Hedrick助理教授,国际数学奥林匹克竞赛金牌(2007)及 Alice T. Schafer 奖(2011)获得者)

报告时间:8月6日10:30--11:30

报告地点:精正楼二楼报告厅

摘要:We discuss the Novikov conjecture and explain that a version of it holds for manifolds whose fundamental groups admit proper and isometric actions on certain non-positively curved infinite dimensional spaces called Hilbert-Hadamard spaces.This talk is based on joint work with Jianchao Wu and Guoliang Yu (arxiv1811.02086).



报告题目:Novikov 猜测

报告人:郁国樑 (美国Texas A&M大学终身教授,上海数学中心首席专家)

报告时间:8月6日13:30--14:30

报告地点:精正楼二楼报告厅

摘要:Novikov 猜想在拓扑,几何,和分析都有重要应用。在这个报告里,我将介绍Novikov 猜测的来源和最近的进展。



报告题目:A BOUNDEDNESS CRITERION FOR SINGULAR INTEGRAL OPERATORS OF CONVOLUTION TYPE ON THE FOCK SPACE

报告人:曹广福(华南农业大学教授,国家级教学名师

报告时间:8月6日14:30--15:30

报告地点:精正楼二楼报告厅

摘要:We show that for an entire function belong to the Fock space。With this characterisation we are able to obtain some fundamental results including the normality,the algebraic property, spectrum and compactness of this operator。 Moreover, we also obtain the reducing subspaces。In particular, in the case, we give a complete solution to an open problem proposed by K. Zhu for the Fock space.



报告题目:数学中的具体与抽象---特殊化与一般化

报告人:龚贵华(美国波多黎各大学终身教授,河北师范大学特聘教授)

报告时间:8月6日15:30--16:30

报告地点:精正楼二楼报告厅

摘要: 在这个讲座中, 我将介绍一些从抽象问题中找到具体线索(可以下手的具体个例),或从杂乱无章的个例中抽象出有用的概念,从而解决问题的方法。我所用到的问题全部来自初等数学。

  

  

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