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arXiv 1010.2135math.RTmath.AG
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仿射Grassmannian中横截切片的动力外尔群与等变上同调

Dynamical Weyl groups and equivariant cohomology of transversal slices in affine Grassmannians

Alexander Braverman, Michael Finkelberg

摘要:

设G是一个约化群,本文利用G的仿射Grassmannian Gr的几何给出了Etingof和Varchenko定义的Langlands对偶群$\check{G}$的动力外尔群的一个解释.在这种解释中的动力学参数Etingof和Varchenko对应的等变参数相对于某些自然环面作用于GR。我们还提出了一个理论上的推广,我们的结果的情况下,仿射卡茨-穆迪群。

英文摘要:

Let G be a reductive group; in this note we give an interpretation of the dynamical Weyl group of of the Langlands dual group $\check{G}$ defined by Etingof and Varchenko in terms of the geometry of the affine Grassmannian Gr of G. In this interpretation the dynamical parameters of Etingof and Varchenko correspond to equivariant parameters with respect to certain natural torus acting on Gr. We also present a conjectural generalization of our results to the case of affine Kac-Moody groups.

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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