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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
中文翻译:
一个组合式为Ehrhart ħ ⁎的hypersimplex的维矢量
更新日期:2020-01-27
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 -vector of the hypersimplex. In particular, we show that is the number of hypersimplicial decorated ordered set partitions of type 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 -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 超单纯形的-向量。特别是,我们表明 是类型的超简单装饰有序集分区的数量 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。超立方体的一般横截面的向量。