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arXiv 2101.09259math.CO
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网格上的强边大地测量问题

Strong edge geodetic problem on grids

Eva Zmazek

摘要:

设$G=(V(G),E(G))$是一个简单图。一个集合$S \subseteq V(G)$是一个强边测地集合,如果在$S$的每一对顶点之间存在一个最短路径的分配,使得这些最短路径覆盖所有的边$E(G)$。最小强边测地集的基数是$G$的强边测地数$\text{sge}(G)$。本文研究了两条路径的笛卡尔积上的强边大地测量问题。计算了$P_n \, \square \, P_2$、$P_n \, \square \, P_3$和$P_n \, \square \, P_4$的强边大地数的精确值。证明了$\text{sge}(P_n \, \square \, P_m)$的一些一般上界。

英文摘要:

Let $G=(V(G),E(G))$ be a simple graph. A set $S \subseteq V(G)$ is a strong edge geodetic set if there exists an assignment of exactly one shortest path between each pair of vertices from $S$, such that these shortest paths cover all the edges $E(G)$. The cardinality of a smallest strong edge geodetic set is the strong edge geodetic number $\text{sge}(G)$ of $G$. In this paper, the strong edge geodetic problem is studied on the Cartesian product of two paths. The exact value of the strong edge geodetic number is computed for $P_n \, \square \, P_2$, $P_n \, \square \, P_3$ and $P_n \, \square \, P_4$. Some general upper bounds for $\text{sge}(P_n \, \square \, P_m)$ are also proved.

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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