arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.18510math.CO
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圈的笛卡尔积的2-彩虹控制数

The 2-rainbow domination number of Cartesian product of cycles

Simon Brezovnik, Darja Rupnik Poklukar, Janez Žerovnik

AI总结:

本文研究了两个圈的笛卡尔积的2-彩虹控制数,给出了若干无穷族的精确值,并证明了所有其他情况的上界与下界。

摘要:

图$G$的$k$-彩虹控制函数($k$RDF)是一个将$\{1,2,...,k\}$的子集分配给$G$的顶点的函数,使得对于满足$f(v)=\emptyset$的顶点$v$,有$\bigcup\nolimits_{u\in N(v)}f(u)=\{1,2,...,k\}$。$k$RDF $f$的权重$w(f)$定义为$w(f)=\sum_{v\in V(G)}\left\vert f(v)\right\vert$。$G$的$k$RDF的最小权重称为$G$的$k$-彩虹控制数,记为$γ_{rk}(G)$。本文研究了两个圈的笛卡尔积的2-彩虹控制数。给出了若干无穷族的精确值,并证明了所有其他情况的下界和上界。

英文摘要:

A $k$-rainbow dominating function ($k$RDF) of $G$ is a function that assigns subsets of $ \{1,2,...,k\}$ to the vertices of $G$ such that for vertices $v$ with $f(v)=\emptyset $ we have $\bigcup\nolimits_{u\in N(v)}f(u)=\{1,2,...,k\}$. The weight $w(f)$ of a $k$RDF $f$ is defined as $w(f)=\sum_{v\in V(G)}\left\vert f(v)\right\vert $. The minimum weight of a $k$RDF of $G$ is called the $k$-rainbow domination number of $G$, which is denoted by $γ_{rk}(G)$. In this paper, we study the 2-rainbow domination number of the Cartesian product of two cycles. Exact values are given for a number of infinite families and we prove lower and upper bounds for all other cases.

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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