arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1701.01416math.CO
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图与图积的Roman $\{2\}$ -控制

Roman $\{2\}$-domination in graphs and graph products

Faezeh Alizadeh, Hamid Reza Maimani, Leila Parsaei Majd, Mina Rajabi Parsa

摘要:

对于$n$阶的图$G=(V,E)$,罗马$\{2\}$ -支配函数$f:V\rightarrow\{0,1,2\}$具有这样的性质:对于具有$f(v)=0$的每个顶点$v\in V$,要么$v$邻近于在$f$下被赋予$2$的顶点,要么$v$邻近于在$f$下被赋予$1$的至少两个顶点.本文对所有具有Roman $\{2\}$ -控制数的图进行了分类,并给出了属于集合$\{2,3,4,n-2,n-1,n\}$的图的分类.此外,我们还得到了一些图运算的Roman $\{2\}$ -控制数的结果.

英文摘要:

For a graph $G=(V,E)$ of order $n$, a Roman $\{2\}$-dominating function $f:V\rightarrow\{0,1,2\}$ has the property that for every vertex $v\in V$ with $f(v)=0$, either $v$ is adjacent to a vertex assigned $2$ under $f$, or $v$ is adjacent to least two vertices assigned $1$ under $f$. In this paper, we classify all graphs with Roman $\{2\}$-domination number belonging to the set $\{2,3,4,n-2,n-1,n\}$. Furthermore, we obtain some results about Roman $\{2\}$-domination number of some graph operations.

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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