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arXiv 2101.01772cs.DM
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在多项式时间内寻找无$P_8$的二部图的有效控制

Finding Efficient Domination for $P_8$-Free Bipartite Graphs in Polynomial Time

Andreas Brandstädt, Raffaele Mosca

摘要:

有限无向图$G$中的顶点集$D$是$G$的{ \em有效控制集}(简称\emph{e.d.s.} \),如果$G$的每个顶点都被$D$的一个顶点控制. \emph{Efficient Domination}(ED)问题,它要求存在一个ED。在$G$中,对于$P_7$ -free图,甚至对于非常有限的$H$ -free二部图类,如$K_{1,4}$ -free二部图和$C_4$ -free二部图,它都是\NP -完全的,而对于$P_7$ -free二部图和$S_{2,2,4}$ -free二部图,它在多项式时间内是可解的。在这里,我们表明,ED可以解决在多项式时间为$P_8$ -自由二部图。

英文摘要:

A vertex set $D$ in a finite undirected graph $G$ is an {\em efficient dominating set} (\emph{e.d.s.}\ for short) of $G$ if every vertex of $G$ is dominated by exactly one vertex of $D$. The \emph{Efficient Domination} (ED) problem, which asks for the existence of an e.d.s.\ in $G$, is known to be \NP-complete for $P_7$-free graphs, and even for very restricted $H$-free bipartite graph classes such as for $K_{1,4}$-free bipartite graphs as well as for $C_4$-free bipartite graphs while it is solvable in polynomial time for $P_7$-free bipartite graphs as well as for $S_{2,2,4}$-free bipartite graphs. Here we show that ED can be solved in polynomial time for $P_8$-free bipartite 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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