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17

2024-10

School Colloquium——关于随机分析的理论与应用

17

2024-10

School Colloquium——An Overview of Augmented Strategy and Applications

17

2024-10

School Colloquium——Multiscale methods and analysis for the highly oscillatory nonlinear Klein-Gordon equation

16

2024-10

计算与应用讨论班——Quasi-entropy

报告人：徐劼（中国科学院计算数学与科学工程计算研究所）时间：2024年10月28日16:00-18:00地点：海纳苑2幢106摘要：Liquid crystals are featured by local anisotropy usually described by angular moment tensors. The free energy of tensors needs a stabilizing entropy term. When non-axisymmetric molecules are involved, two classical approaches to write down an entropy term, quartic polynomial and maximum entr...

16

2024-10

动力系统与分形几何讨论班——Lower Assouad-type dimensions: old and new

报告人：陈海鹏（深圳技术大学）报告时间：10月25日（周五）下午3点30分—4点30分报告地点：数学楼（海纳苑2幢）203室报告摘要: As natural duals to the well-studied Assouad-type dimensions, the lower Assouad-type dimensions form a family of fractal dimensions that describe and quantify the coarse aspects of a set. In this talk, we will review their definitions and properties, and present ong...

14

2024-10

组合数学和代数编码讲座—— Covers of the Integers by Residue Classes and their Extensions to Groups

报告人：孙智伟教授（南京大学）报告时间：2024年10月18日周五下午3:00-4:00报告地点：海纳苑2幢820摘要：A system A={a_s+n_sZ: s=1,2,...,k} of k residue classes is called a cover of Z if any integer belongs to one of the k residue classes. This concept was introduced by P. Erdos in the 1950s. Erdos ever conjectured that A is a cover of Z whenever it covers 1,...,2^k. In this talk we introduce s...

14

2024-10

组合数学和代数编码讲座—— Decoding algorithm of twisted GRS codes and twisted Goppa codes

报告人：岳勤教授报告时间：2024年10月18日周五下午2:00-3:00报告地点：海纳苑2幢820摘要： In this talk, we use extended Euclid's algorithm to support new decoding algorithms for two classes of maximum distance separable (MDS) twisted generalized Reed-Solomon (TGRS) codes of parameters [n, n-t, t+1 ] over F_q. For t even, they can correct t/2 errors with time complexity O(qn). Moreover, we...

14

2024-10

辛拓扑与物理讨论班——Operadic Structures in Floer theory

报告人：Mohammed Abouzaid，（Stanford University）时间：2024年10月18日（周五）10:30-11：30地点：海纳苑2幢206摘要：Floer homology groups carry a wealth of operations coming from moduli spaces of pseudo-holomorphic curves. These operations lift to the chain level, but except for the case of discs, it is difficult to write formulae for all of them. I will explain recent work with Groman and Varolgune...

11

2024-10

Distinguished Lecture——Morse theory at 100 years

07

2024-10

Distinguished Lecture——A new algorithm for machine learning and artificial intelligence

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