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arXiv 1309.0643math.CO
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根积图的强度量维数

Strong metric dimension of rooted product graphs

Dorota Kuziak, Ismael G. Yero, Juan A. Rodríguez-Velázquez

摘要:

设$G$是一个连通图.顶点$w$强分解$G$的顶点对$u$,$v$,如果存在包含$v$的某个最短$u-w$路径或包含$u$的某个最短$v-w$路径。一个顶点集$W$是$G$的强可解集,如果$G$的每对顶点都能被$W$的某个顶点强可解. $G$的强分解集的最小基数称为$G$的强度量维数。已知计算该不变量的问题是NP-困难的。这意味着找到强度量维数的特殊类的图或获得良好的界限,这个不变。本文研究了图的根积的强度量维数的精确值或精确界的问题,并用因子图的不变量来表示。

英文摘要:

Let $G$ be a connected graph. A vertex $w$ strongly resolves a pair $u$, $v$ of vertices of $G$ if there exists some shortest $u-w$ path containing $v$ or some shortest $v-w$ path containing $u$. A set $W$ of vertices is a strong resolving set for $G$ if every pair of vertices of $G$ is strongly resolved by some vertex of $W$. The smallest cardinality of a strong resolving set for $G$ is called the strong metric dimension of $G$. It is known that the problem of computing this invariant is NP-hard. This suggests finding the strong metric dimension for special classes of graphs or obtaining good bounds on this invariant. In this paper we study the problem of finding exact values or sharp bounds for the strong metric dimension of rooted product of graphs and express these in terms of invariants of the factor graphs.

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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