论文标题

任意Coxeter组中的Bruhat间隔和抛物线盒

Bruhat intervals and parabolic cosets in arbitrary Coxeter groups

论文作者

Marietti, Mario

论文摘要

在[纯和应用代数{224}(2020),第12、106449号],V。Mazorchuk和R. Mr以上(在A. Hultman的帮助下)证明,鉴于Weyl群,伴侣间隔与寄生虫coset具有独特的Maximal元素和独特的最小元素。我们表明,在任意Coxeter组的情况下,此类相交实际上也是Bruhat的间隔。

In [Journal of Pure and Applied Algebra {224} (2020), no 12, 106449], V. Mazorchuk and R. Mrđen (with some help by A. Hultman) prove that, given a Weyl group, the intersection of a Bruhat interval with a parabolic coset has a unique maximal element and a unique minimal element. We show that such intersections are actually Bruhat intervals also in the case of an arbitrary Coxeter group.

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