Neighborly polytopes

Neighborly polytopes
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邻里多面体

DOI:
10.1007/bf02761235
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发表时间:
1982
影响因子:
1
通讯作者:
Ido Shemer
Ido Shemer
中科院分区:
数学2区
文献类型:
--
作者:
Ido Shemer

文献摘要

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一个2 m-多面体Q是相邻的,如果Q的每个顶点确定一个面。证明了相邻2 m-多胞形的组合结构决定了每个子多胞形的组合结构。我们提出了一种“将顶点缝合到一个多面体上”的构造方法,当它应用于相邻的2 m-多面体时,会产生一个多个顶点的相邻2 m-多面体。利用这一构造,我们证明了具有2 m +β个顶点的相邻2 m-多面体的组合类型数(2 m +β,2 m)随着β→∞(m ≥ 2固定)和asm→∞(β ≥ 4固定)超指数增长.
A 2m-polytopeQ isneighborly if eachm vertices ofQ determine a face. It is shown that the combinatorial structure of a neighborly 2m-polytope determines the combinatorial structure of every subpolytope. We develop a construction of “sewing a vertex onto a polytope”, which, when applied to a neighborly 2m-polytope, yields a neighborly 2m-polytope with one more, vertex. Using this construction, we show that the numberg(2m+β,2m) of combinatorial types of neighborly 2m-polytopes with 2m+β vertices grows superexponentially as β→∞ (m≧2 fixed) and asm→∞ (β≧4 fixed).