学术报告

Grassmannian braiding categorified

发布人:发布时间: 2021-01-14

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题目:Grassmannian braiding categorified

         

摘要:Chris Fraser has discovered an action of the extended affine braid group on d strands on the Grassmannian cluster algebra of k-subspaces in n-space, where d is the least common divisor of k and n. We lift this action to the corresponding cluster category first constructed by Geiss-Leclerc-Schroeer in 2008. For this, we use Jensen-King-Su's description of this category as a stable category of Cohen-Macaulay modules, or equivalently as a singularity category in the sense of Buchweitz/Orlov. This is a report on ongoing joint work with Chris Fraser.

 

报告人简介:Bernhard Keller是著名代数学家,在微分分次理论、丛理论以及Hochschild同调理论中均做出了奠基性的学术成果。Keller教授是挪威皇家科学通讯院士、比利时安特卫普大学荣誉博士、法国科学院Sophie Germain奖得主、2006年马德里国际数学家大会ICM邀请报告人以及美国数学会Fellow

 

时间:2021122日 3:00-4:00

 

地点:数学系西大楼108

 

邀请人:丁南庆 老师