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arXiv 1111.5864math.CO
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函数图的度量维数

On Metric Dimension of Functigraphs

Linda Eroh, Cong X. Kang, Eunjeong Yi

摘要:

图$G$的\emph{metric dimension},记为$\dim(G)$,是使每个顶点由它到所选顶点的距离唯一确定的最小顶点数。设$G_1$和$G_2$是图$G$的不相交副本,$f: V(G_1) \rightarrow V(G_2)$是函数。然后,\emph{functigraph} $C(G, f)=(V, E)$具有顶点集$V=V(G_1) \cup V(G_2)$和边集$E=E(G_1) \cup E(G_2) \cup \{uv \mid v=f(u)\}$。我们研究如何度量尺寸的行为,通过从$G$到$C(G,f)$的第一个显示,$2 \le \dim(C(G, f)) \le 2n-3$,如果$G$是一个连通图的顺序$n \ge 3$和$f$是任何功能。我们进一步研究了完全图和圈上函数图的度量维数。

英文摘要:

The \emph{metric dimension} of a graph $G$, denoted by $\dim(G)$, is the minimum number of vertices such that each vertex is uniquely determined by its distances to the chosen vertices. Let $G_1$ and $G_2$ be disjoint copies of a graph $G$ and let $f: V(G_1) \rightarrow V(G_2)$ be a function. Then a \emph{functigraph} $C(G, f)=(V, E)$ has the vertex set $V=V(G_1) \cup V(G_2)$ and the edge set $E=E(G_1) \cup E(G_2) \cup \{uv \mid v=f(u)\}$. We study how metric dimension behaves in passing from $G$ to $C(G,f)$ by first showing that $2 \le \dim(C(G, f)) \le 2n-3$, if $G$ is a connected graph of order $n \ge 3$ and $f$ is any function. We further investigate the metric dimension of functigraphs on complete graphs and on cycles.

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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