arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2004.07118math.COcs.DMcs.DS
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完全边着色置换图

Complete Edge-Colored Permutation Graphs

Tom Hartmann, Max Bannach, Martin Middendorf, Peter F. Stadler, Nicolas Wieseke, Marc Hellmuth

摘要:

我们引入了完全边着色置换图的概念,即完全图是“经典”置换图的边不交并。我们证明了图$G=(V,E)$是完全边着色置换图当且仅当$G$的每个单色子图是“经典”置换图且$G$不包含具有~ $3$不同颜色的三角形.以模分解为框架,证明了完全边色置换图的强素模刻画,从而导出了完全边色置换图.这导致了一个$\mathcal{O}(|V|^2)$时间识别算法。此外,我们表明,完全边着色置换图形成一个超类的所谓的符号超度量,这种图的着色总是一个Gallai着色。

英文摘要:

We introduce the concept of complete edge-colored permutation graphs as complete graphs that are the edge-disjoint union of "classical" permutation graphs. We show that a graph $G=(V,E)$ is a complete edge-colored permutation graph if and only if each monochromatic subgraph of $G$ is a "classical" permutation graph and $G$ does not contain a triangle with~$3$ different colors. Using the modular decomposition as a framework we demonstrate that complete edge-colored permutation graphs are characterized in terms of their strong prime modules, which induce also complete edge-colored permutation graphs. This leads to an $\mathcal{O}(|V|^2)$-time recognition algorithm. We show, moreover, that complete edge-colored permutation graphs form a superclass of so-called symbolic ultrametrics and that the coloring of such graphs is always a Gallai coloring.

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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