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arXiv 2005.06746math.CO
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2d + 2顶点多面体的最小边数

Minimum number of edges of polytopes with 2d + 2 vertices

Guillermo Pineda-Villavicencio, Julien Ugon, David Yost

摘要:

我们定义了一个类似的立方体和类似的5楔在更高的维度,每个$2d+2$顶点和$d^2+2d-3$边缘。我们发现,这两个是唯一的极小的边的数量,其中d-多面体与$2d+2$顶点,所有$d$,除了4,5和7。我们还表明,有四个零星的极小在这些低维。我们宣布部分解决相应的问题,多面体与$2d + 3$顶点。

英文摘要:

We define an analogue of the cube and an analogue of the 5-wedge in higher dimensions, each with $2d+2$ vertices and $d^2+2d-3$ edges. We show that these two are the only minimisers of the number of edges, amongst d-polytopes with $2d+2$ vertices, for all $d$ except 4, 5 and 7. We also show that there are four sporadic minimisers in these low dimensions. We announce a partial solution to the corresponding problem for polytopes with $2d + 3$ vertices.

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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