arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1903.03052math.CO
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图的二分化

Bipartization of graphs

Mateusz Miotk, Jerzy Topp, Paweł Żyliński

摘要:

图$G$的控制集是一个集合$D\subseteq V_G$,使得$V_G-D$中的每个顶点都与$D$中的至少一个顶点相邻,并且$G$的控制数$γ(G)$是$G$的控制集的最小基数。本文给出了控制数等于其小部集的基数的二部图的一个新刻画。我们的特征是基于一个新的图形操作。

英文摘要:

A dominating set of a graph $G$ is a set $D\subseteq V_G$ such that every vertex in $V_G-D$ is adjacent to at least one vertex in $D$, and the domination number $γ(G)$ of $G$ is the minimum cardinality of a dominating set of $G$. In this paper we provide a new characterization of bipartite graphs whose domination number is equal to the cardinality of its smaller partite set. Our characterization is based upon a new graph operation.

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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