arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.00600math.CO
收藏

关于森林控制集的平均阶

On the average order of a dominating set of a forest

Aysel Erey

摘要:

证明了森林图$G$在$n$个顶点上的控制集的平均阶至多为$2n/3$ .此外,当且仅当$G$的每个非叶顶点都是具有一个或两个叶邻居的支持顶点时,等式才能实现。我们的结果回答了Beaton和Brown的一个公开问题。

英文摘要:

We show that the average order of a dominating set of a forest graph $G$ on $n$ vertices with no isolated vertices is at most $2n/3$. Moreover, the equality is achieved if and only if every non-leaf vertex of $G$ is a support vertex with one or two leaf neighbors. Our result answers an open question of Beaton and Brown.

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。

↑