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arXiv 0705.1082math.CO
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具有给定次数和线性系数的h^*-多项式的格多面体

Lattice polytopes having h^*-polynomials with given degree and linear coefficient

Benjamin Nill

摘要:

格多面体的h^*-多项式是埃赫哈特多项式的生成函数的分子。设P是具有h^*-多项式的d次格多面体,线性系数为h^*_1.我们证明了如果P的维数大于或等于h^* 1(2d+1)+ 4d-1,则P必是低维格多面体上的格金字塔.这个结果有一个纯粹的组合证明,并推广了Batyrev最近的一个定理。

英文摘要:

The h^*-polynomial of a lattice polytope is the numerator of the generating function of the Ehrhart polynomial. Let P be a lattice polytope with h^*-polynomial of degree d and with linear coefficient h^*_1. We show that P has to be a lattice pyramid over a lower-dimensional lattice polytope, if the dimension of P is greater or equal to h^*_1 (2d+1) + 4d-1. This result has a purely combinatorial proof and generalizes a recent theorem of Batyrev.

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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