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A combinatorial formula for the Ehrhart h⁎-vector of the hypersimplex
Journal of Combinatorial Theory Series A ( IF 1.1 ) Pub Date : 2020-01-27 , DOI: 10.1016/j.jcta.2020.105213
Donghyun Kim

We give a combinatorial formula for the Ehrhart h-vector of the hypersimplex. In particular, we show that hd(Δk,n) is the number of hypersimplicial decorated ordered set partitions of type (k,n) with winding number d, thereby proving a conjecture of N. Early. We do this by proving a more general conjecture of N. Early on the Ehrhart h-vector of a generic cross-section of a hypercube.



中文翻译:

一个组合式为Ehrhart ħ 的hypersimplex的维矢量

我们为埃哈特给出一个组合公式 H超单纯形的-向量。特别是,我们表明HdΔķñ 是类型的超简单装饰有序集分区的数量 ķñ绕数为d,从而证明N的猜想。我们通过证明N更笼统地做到这一点。H超立方体的一般横截面的向量。

更新日期:2020-01-27
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