学术报告
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31
2022-03
Holomorphic d-scalar curvature on almost Hermitian manifolds-葛建全 教授 (北京师范大学)线上学术报告 Title: Holomorphic d-scalar curvature on almost Hermitian manifolds Speaker: 葛建全教授 (北京师范大学) Abstract:In this talk, we introduce our recent work on the existence of constant holomorphic d-scalar curvature and the prescribing holomor...
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30
2022-03
双曲空间中的超曲面-马世光(南开大学)题目:双曲空间中的超曲面 报告人:马世光(南开大学) 摘要:埃尔朗根纲领内容是:几何学所研究的对象是在对称 群作用下的不变量。一般来说,不同的几何具有不同的群作 用。我们从双曲空间与其无穷远边界(球面)的相同对称群 出发,引出 Ads-CFT 对偶的观点,然后,我们应用这种观 点来解决双曲空间中的超曲面的嵌入问题。 时间:2022 年 3 月 30 日(周三)19:00-20:00 地点:李群与微分几何线上联合讨论班 腾讯会议号:287-653-146 ...
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25
2022-03
On Multiple Zeta Values-张介玉 教授(台湾清华大学)题目: On Multiple Zeta Values 报告人: 张介玉 教授 (台湾清华大学) Abstract: In this talk, we will first introduce the classical theory of multiple zeta values (MZV’s) as well as some celebrated problems and recent developments. We will then introdu...
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24
2022-03
A proof of Toponogov's theorem in Alexandrov geometry-王雨生 教授 (北京师范大学)线下学术报告 Title: A proof of Toponogov's theorem in Alexandrov geometry Speaker: 王雨生教授 (北京师范大学) Abstract In the talk, we will provide a new proof for Toponogov's theorem (in the large) in Alexandrov geometry with lower curvature bound. Th...
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22
2022-03
Collapsing geometry of Calabi-Yau metrics in complex dimension two-张若冰 (普林斯顿大学)Title: Collapsing geometry of Calabi-Yau metrics in complex dimension two Speaker: 张若冰 (普林斯顿大学) Abstract: Calabi-Yau metrics exhibit highly complicated behaviors as collapse occurs, which leads to substantial difficulties in both analytic ...
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18
2022-03
Bessel F-isocrystals for reductive groups-许大昕 副研究员(中科院晨兴数学中心)题目: Bessel F-isocrystals for reductive groups 报告人: 许大昕 副研究员 (中科院晨兴数学中心) Abstract: I will first review the relationship between the Kloosterman sums and the classical Bessel differential equation. Recently, there are two generali...
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17
2022-03
Recent developments on the Dirichlet problem for the minimal surface system-张永胜 (同济大学)线下学术报告 Title: Recent developments on the Dirichlet problem for the minimal surface system Speaker: 张永胜 (同济大学) Abstract:此报告为该方向的综述性报告(几何、分析、拓扑等技术细节较轻)。首先将回顾 Lawson-Osserman 取得的关键突破,然后逐步介绍近几年来观察到的一些有趣现象,其间会提及若干尚未解决的相关问题。 北京时间:2022年3月17日...
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16
2022-03
Fill-in in terms of scalar curvature -王文龙(南开大学)题目:Fill-in in terms of scalar curvature 报告人:王文龙(南开大学) Abstract : In this talk, we will first introduce the notion “fill-in with nonnegative scalar curvature”. Then we will talk about the motivation of this fill-in problem both from geome...
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10
2022-03
Canonical blow-ups of Grassmann manifolds-方汉隆 (北京大学)线下学术报告 Title: Canonical blow-ups of Grassmann manifolds Speaker: 方汉隆 (北京大学) Abstract We introduce certain canonical blow-ups of Grassmann manifolds by partitioning the Plücker coordinates with respect to a parameter. Various geometric a...
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13
2022-01
Selection dynamics for Deep Neural Networks - Prof. Peter Markowich (King Abdullah University of Science and Technology)Distinguished Lecture Series in Mathematics 系列数学前沿学术讲座 报告题目:Selection dynamics for Deep Neural Networks 报告人:Prof. Peter Markowich (King Abdullah University of Science and Technology) 时间:2022年1月13日 16:00-17:30 PM (Beijing time), 9:00...
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07
2022-01
A construction of directed strongly regular graphs - 冯荣权 教授 (北京大学)编码密码讨论班系列活动六 题目: A construction of directed strongly regular graphs 报告人:冯荣权 教授 (北京大学) 时间:2022年1月7日 上午9:30-10:30 地点:腾讯会议 会议ID:358 951 005 摘要: An (n,k,t,p,q) -directed strongly regular graph is a directed graph with verti...
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07
2022-01
Gilbert-Varshamov Bounds on the Size of Binary Codes - 陆玫 教授 (清华大学)编码密码讨论班系列活动六 题目: Gilbert-Varshamov Bounds on the Size of Binary Codes 报告人:陆玫 教授 (清华大学) 时间:2022年1月7日 下午14:30-15:30 地点:腾讯会议 会议ID:461 846 711 摘要: The well-known Gilbert-Varshamov (GV) bound states that the maximum size of a binary cod...
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06
2022-01
uniformizers of the false Tate curve extension of Q_p - 王善文 教授(中国人民大学)题目: uniformizers of the false Tate curve extension of Q_p 报告人:王善文 教授(中国人民大学) 时间:2022年1月6号14:30-15:30 地点:教二楼727 摘要: In our previous work, we construct explicitly the uniformizer of the false Tate curve extension Q_p(\zeta_...
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06
2022-01
An Accurate Transfer Learning Likelihood and Related Phenomenon of Stein's Paradox - 林路 教授(山东大学)题目:An Accurate Transfer Learning Likelihood and Related Phenomenon of Stein's Paradox 报告人:林路 教授(山东大学) 时间:2022年1月6日(周四)上午10:00-11:00 地点:腾讯会议 会议ID:910 497 822 报告摘要:A basic condition for efficient transfer learning is the similarity bet...
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02
2022-01
Kähler-Einstein metrics and volume comparison in Kähler geometry - 张科伟 博士 (北京师范大学)Title:Kähler-Einstein metrics and volume comparison in Kähler geometry Speaker:张科伟 博士 (北京师范大学) 时间:2022年1月2日(星期天)上午9:00-11:00 地点:腾讯在线会议 会议 ID:808 9159 5567 Abstract I will talk about some recent progress on the study of the Yau-Ti...
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30
2021-12
Global solutions for 3D incompressible inhomogeneous asymmetric fluids in critical space - 潜陈印(浙江师范大学)题目: Global solutions for 3D incompressible inhomogeneous asymmetric fluids in critical space 报告人:潜陈印(浙江师范大学) 时间:2021年12月30日19:00-20:00 地点:腾讯会议 会议ID:747 698 593 摘要:In this talk, we study the 3D inhomogeneous incompressible asymmetri...
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27
2021-12
On the equivalence of Lunardon-Polverino maximum scattered linear sets - 周悦 研究员 (国防科技大学) -
27
2021-12
On the size distribution of Levenshtein balls with radius one - 王琦 研究员 (南方科技大学)编码密码讨论班系列活动五 题目: On the size distribution of Levenshtein balls with radius one 报告人:王琦 研究员 (南方科技大学) 时间:2021年12月27日 上午10:00-11:00 地点:腾讯会议 会议ID:876 637 991 摘要: The fixed length Levenshtein (FLL) distance between two codewords is the...
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24
2021-12
The second obstruction and descent - 吕昌 研究员(中科院信工所)题目: The second obstruction and descent 报告人:吕昌 研究员(中科院信工所) 时间:2021年12月24日(周五) 上午9:00-11:00 地点:教二楼827 摘要:I shall start from several classical cohomological obstructions to local-principle. Then in a categrical fashion, I introduce my ...
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24
2021-12
Dimension of invariant subspace of a Stark-friendly symmetric cipher design - 吴保峰 研究员(中科院信工所)题目: Dimension of invariant subspace of a Stark-friendly symmetric cipher design 报告人:吴保峰 研究员(中科院信工所) 时间:2021年12月24日(周五) 上午9:00-11:00 地点:教二楼827 摘要:The HADES design strategy combines the classical SPN construction with the Partial SPN (PS...