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An Upper Bound for the Cubicity of Folded Hypercube

机译:折叠超立方体立方的上限

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摘要

For a graph, its boxicity is the minimum dimension k such that G is repre-sentable as the intersection graph of axis-parallel boxes in the k-dimension space. When the boxes are restricted to be axis-parallel k-dimension cubes, the minimum k required to represent G is called the cubicity of G. In this paper, a special graph called unit-interval graph. IG[X, Y] is given, then 2n such graphs which have the same vertices as V(FQ_n) are constructed, where FQ_n is the n-dimension folded hypercube. Thanks to the special structure of IG[X,Y], the result that cubicity(FQ_n)≤ 2n is proved.
机译:对于图,其方度是最小尺寸k,以使G可以表示为k维空间中的平行轴箱的交点图。当框被限制为与轴平行的k维立方体时,表示G所需的最小k称为G的三次方。在本文中,一种特殊的图称为单位间隔图。给定IG [X,Y],然后构造2n个具有与V(FQ_n)相同顶点的图,其中FQ_n是n维折叠超立方体。由于IG [X,Y]的特殊结构,证明了立方度(FQ_n)≤2n。

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