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arXiv 2302.08862math.CO
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超支配的计算复杂性方面

Computational complexity aspects of super domination

Csilla Bujtás, Nima Ghanbari, Sandi Klavžar

摘要:

设$G$是一个图。一个控制集$D\subseteq V(G)$是一个超控制集,如果对每个顶点$x\in V(G) \setminus D$都存在$y\in D$使得$N_G(y)\cap (V(G)\setminus D)) = \{x\}$。$G$的最小超控制集的基数是$G$的超控制数。给出了树$T$的超控制数的一个精确公式,并证明了$T$的最小超控制集可以在线性时间内计算.证明了如果$G$是围长至少为$8$的二部图,则判定图$G$的超控制数至多为给定整数是NP-完全的.确定了图的所有$k$ -剖分的超控制数。有趣的是,在一半的情况下,精确的值可以有效地计算从所获得的公式,而在其他情况下,计算是困难的。在得到这些公式的同时,引入了II-匹配数,并证明了它们在计算上是难以确定的。

英文摘要:

Let $G$ be a graph. A dominating set $D\subseteq V(G)$ is a super dominating set if for every vertex $x\in V(G) \setminus D$ there exists $y\in D$ such that $N_G(y)\cap (V(G)\setminus D)) = \{x\}$. The cardinality of a smallest super dominating set of $G$ is the super domination number of $G$. An exact formula for the super domination number of a tree $T$ is obtained and demonstrated that a smallest super dominating set of $T$ can be computed in linear time. It is proved that it is NP-complete to decide whether the super domination number of a graph $G$ is at most a given integer if $G$ is a bipartite graph of girth at least $8$. The super domination number is determined for all $k$-subdivisions of graphs. Interestingly, in half of the cases the exact value can be efficiently computed from the obtained formulas, while in the other cases the computation is hard. While obtaining these formulas, II-matching numbers are introduced and proved that they are computationally hard to determine.

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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