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arXiv 2005.11648math.CO
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完美匹配与零和3-幻标号

Pertfect matching and zero-sum 3-magic labeling

Haobai Wang

摘要:

一个映射$l : E(G) \rightarrow A$称为图$G$的标号,其中$A$是一个加性的阿贝尔群。对于每个正整数$h \geqslant 2$,如果有一条边将$l$从$E(G)$标记为$\mathbb{Z}_{h} \backslash \{0\}$,使得对每个顶点$v \in V(G)$有$s(v) = \sum_{uv\in E(G)}l(uv) = 0$,则称图$G$是零和$h$ -魔图.在2014年,Saeed Akbari,Farhad Rahmati和Sanaz Zare证明了每个5-正则图都有一个零和$3$ -魔术标签。本文证明了每个边都包含在三角形中的5-正则图必有完美匹配,并且存在零和3-幻标号,部分地证实了这一猜想。

英文摘要:

A mapping $l : E(G) \rightarrow A$, where $A$ is an abelian group which written additively, is called a labeling of the graph $G$. For every positive integer $h \geqslant 2$, a graph $G$ is said to be zero-sum $h$-magic if there is an edge labeling $l$ from $E(G)$ into $\mathbb{Z}_{h} \backslash \{0\}$ such that $s(v) = \sum_{uv\in E(G)}l(uv) = 0$ for every vertex $v \in V(G)$. In 2014, Saieed Akbari, Farhad Rahmati and Sanaz Zare conjectured that every 5-regular graph admits a zero-sum $3$-magic labeling. In this paper, we obtained that every 5-regular graph with every edge contains in a triangle must have a perfect matching, and admits a zero-sum 3-magic labeling, which partially confirms this conjecture.

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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