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arXiv 0909.0361math.QAmath.SG
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Grassmannian中与簇代数结构相容的Poisson结构

Poisson structures compatible with the cluster algebra structure in Grassmannians

Michael Gekhtman, Michael Shapiro, Alexander Stolin, Alek Vainshtein

摘要:

我们描述了所有的泊松括号兼容的自然集群代数结构的开放Schubert细胞的格拉斯曼$G_k(n)$,并表明,任何这样的括号赋予$G_k(n)$的结构的泊松齐性空间相对于自然行动的$SL_n$配备了R-矩阵Poisson-Lie结构。相应的R-矩阵属于Belavin-Drinfeld分类中最简单的一类。而且,每一个相容的Poisson结构都可以用这种方法得到。

英文摘要:

We describe all Poisson brackets compatible with the natural cluster algebra structure in the open Schubert cell of the Grassmannian $G_k(n)$ and show that any such bracket endows $G_k(n)$ with a structure of a Poisson homogeneous space with respect to the natural action of $SL_n$ equipped with an R-matrix Poisson-Lie structure. The corresponding R-matrices belong to the simplest class in the Belavin-Drinfeld classification. Moreover, every compatible Poisson structure can be obtained this way.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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