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The Vertex Linear Arboricity of a Special Class of Integer Distance Graphs

机译:一类特殊的整数距离图的顶点线性树状度

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The vertex linear arboricity vla(G) of a nonempty graph G is the minimum number of subsets into which the vertex set V(G) can be partitioned so that each subset induces a subgraph whose connected components are paths. An integer distance graph is a graph G(D) with the set of all integers as vertex set and two vertices u,v∈ Z are adjacent if and only if | u - v |∈ D where the distance set D is a subset of the positive integers set. Let D_(m,k,3) = [1, m] {k, 2k, 3k} for m ≥ 4k ≥ 4. In this paper, it is obtained that some upper and lower bounds of the vertex linear arboricity of the integer distance graph G(D_(m,k,3)) and the exact value of it for some special cases.
机译:非空图G的顶点线性树状度vla(G)是顶点集V(G)可以划分为的子集的最小数量,因此每个子集都可以生成一个子图,该子图的连接成分是路径。整数距离图是一个图G(D),其中所有整数的集合为顶点集,并且两个顶点u,v∈Z相邻,当且仅当|是u-v |∈D其中距离集D是正整数集的子集。令D_(m,k,3)= [1,m] {k,2k,3k},当m≥4k≥4时。在本文中,我们得出了该点的顶点线性任意性的上下界。整数距离图G(D_(m,k,3))及其在某些特殊情况下的确切值。

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