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Power domination on triangular grids with triangular and hexagonal shape
Journal of Combinatorial Optimization ( IF 0.9 ) Pub Date : 2020-06-02 , DOI: 10.1007/s10878-020-00587-z
Prosenjit Bose , Valentin Gledel , Claire Pennarun , Sander Verdonschot

The concept of power domination emerged from the problem of monitoring electrical systems. Given a graph G and a set \(S \subseteq V(G)\), a set M of monitored vertices is built as follows: at first, M contains only the vertices of S and their direct neighbors, and then each time a vertex in M has exactly one neighbor not in M, this neighbor is added to M. The power domination number of a graph G is the minimum size of a set S such that this process ends up with the set M containing every vertex of G. We show that the power domination number of a triangular grid \(H_k\) with hexagonal-shaped border of length \(k-1\) is \(\left\lceil \dfrac{k}{3} \right\rceil \), and the one of a triangular grid \(T_k\) with triangular-shaped border of length \(k-1\) is \(\left\lceil \dfrac{k}{4} \right\rceil \).

中文翻译:

具有三角形和六边形的三角形网格上的功率控制

功率支配的概念来自监视电气系统的问题。给定一个图G和一个集合\(S \ subseteq V(G)\),按如下方法构建一组受监视的顶点M:首先,M仅包含S的顶点及其直接相邻的顶点,然后每次M中的顶点恰好有一个邻居不在M中,该邻居被添加到M中。图G幂控制数是集合S的最小大小,因此该过程以包含每个顶点的集合M结束。我们显示,边长为(k-1 \)的六边形边界的三角形网格\(H_k \)的幂控制数为\(\ left \ lceil \ dfrac {k} {3} \ right \ rceil \ ),而三角形边框边界为\(k-1 \)的三角形网格\(T_k \)之一是\(\ left \ lceil \ dfrac {k} {4} \ right \ rceil \)
更新日期:2020-06-02
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