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21

2024-10

代数与表示论专题报告——The Unicity Theorem and the center of the SL3-skein algebra

Speaker: Dr. Zhihao Wang (王志浩博士) (新加坡Nanyang Technological Univ. and 荷兰Univ. of Groningen.)Time: 3:00-5:00pm, Oct. 23 (Wednesday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: SLn-skein algebra is related to character variety, Higher Teichmüller theory, and cluster algebra. For example, the reduced stated SL2-skein algebra has proved to be isomorphi...

18

2024-10

代数与表示论系列报告——Some open questions in non-commutative algebra

Title：Some open questions in non-commutative algebraSpeaker: Professor James Zhang (张坚教授) (University of Washington)Time: 3:00-4:00pm, Oct. 21 (Monday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: We survey some important open questions in noncommutative algebra posted during the last 30 years, some of which are motivated by noncommutative algebraic geometry...

18

2024-10

代数与表示论系列报告——On a class of noetherian prime Hopf algebra

Speaker: Dr.zahra nazemian (University of Graz, Austria)Time: 4:10-5:10pm, Oct. 21 (Monday), 2024Place: 浙江大学紫金港校区海纳苑二号楼101Abstract: Brown and Goodearl proposed a conjecture stating that every prime noetherian Hopf algebra is Auslander Gorenstein (AG). We prove that if a prime noetherian Hopf $k$-algebra is AG, or more generally, if it possesses an Auslander dualizin...

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—— 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

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...

07

2024-10

代数与表示论特邀报告——Modular Poisson varieties and its symplectic foliations

07

2024-10

代数与表示论特邀报告——Infinite rank cluster algebras arising from double Bott-Samelson cells

23

2024-09

动力系统与分形几何讨论班——Lp estimates of orthogonal projections, dual Furstenberg problem, and discretized sum-product

报告人：刘博辰（南方科技大学）报告时间：9月27日下午3点30分—4点30分报告地点：腾讯会议（会议号：381-841-791；会议密码：240925）报告摘要: L2 estimates of orthogonal projections are classical in geometric measure theory. In this talk we shall discuss about recent progress on Lp estimates. Then we come up with a dual version of the Furstenberg problem and introduce some partial results. We also find th...

25

2024-07

New perspective on categorical Torelli problems for del Pezzo threefold

报告人：张诗卓研究员中科院数学所晨兴数学中心时间： 2024年7月31日下午13:00-17:00地点：海纳苑2幢102 报告人简介：张诗卓于2019年毕业于印第安纳大学，后于爱丁堡大学，德国波恩马普所，法国图卢兹数学所，德国Hausdorff 数学研究所，美国加州大学伯克利分校MSRI数学研究所做博后，目前在中科院数学所晨兴数学中心访问。张诗卓博士的研究方向是代数簇的凝聚层导出范畴，Bridgeland...

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