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1-可嵌入曲面的图的边染色

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1-可嵌入曲面的图的边染色 孙林1,2, 孙德荣21. 昌吉学院数学系, 昌吉 830100;
2. 山东大学数学学院, 济南 250100 Edge Colourings of Embedded 1-graphs SUN Lin1,2, SUN Derong21. Department of Mathematics, Changji College, Changji 831100;
2. Department of Mathematics, Changji College, Changji 831100
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摘要一个图称为是1-可嵌入曲面的, 当且仅当它可以画在一个曲面上, 使得它的任何一条边最多交叉另外一条边. χ'(G)和Δ(G)分别表示图G的边色数和最大度. 给定图G是1-可嵌入到欧拉示性数χ(Σ)≥0的 曲面Σ上的图. 如果Δ(G)≥8且不含4-圈或者Δ(G)≥7且围长g(G)≥4, 则图G满足等式Δ(G)=χ'(G), 其中, g(G)表示图G中最短圈的长度.
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收稿日期: 2014-07-09
PACS:O157.5
基金资助:新疆维吾尔自治区高校科研计划(XJEDU2014S067)资助项目.
引用本文:
孙林, 孙德荣. 1-可嵌入曲面的图的边染色[J]. 应用数学学报, 2016, 39(1): 12-20. SUN Lin, SUN Derong. Edge Colourings of Embedded 1-graphs. Acta Mathematicae Applicatae Sinica, 2016, 39(1): 12-20.
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