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arXiv 2104.15080math.CO
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凹格多面体有单峰h*-向量吗?

Do alcoved lattice polytopes have unimodal h*-vector?

Rainer Sinn, Hannah Sjöberg

摘要:

我们证明了R^n中的凹多面体P(李型A)的h*-向量是单峰的,如果它们包含内部格点并且它们的刻面到内部格点集的格距离为1。对于一般的凹洞多面体,这种距离的最大可能是dim(P)-1。本文的第二个目的是作为一个指导以前的工作围绕单峰的h*-向量的凹多面体和相关问题。

英文摘要:

We show that h*-vectors of alcoved polytopes P in R^n (of Lie type A) are unimodal if they contain interior lattice points and their facets have lattice distance 1 to the set of interior lattice points. The maximal possible such distance for general alcoved polytopes is shown to be dim(P)-1. A secondary purpose of the paper is to serve as a guide to previous work surrounding unimodality of h*-vectors of alcoved polytopes and related questions.

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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