OALib Journal期刊
ISSN: 2333-9721
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最大度是6且不含有弦的小圈的可平面图的边染色
, PP. 19-24
Keywords: 平面图,边染色,最大度,圈
Abstract:
对于最大度是δ的可平面图g,如果χ’(g)=δ,称g为第一类图;如果χ’(g)=δ+1,称g为第二类图,χ’(g)表示g的边染色数.1965年,vizing证明了任何一个δ≥8的可平面图均是第一类图,并猜想δ=6的可平面图也是第一类图.本文运用discharge方法证明了最大度是6,且不含有弦的k-圈的可平面图是第一类图(4≤k≤7).
References
[1] | vizingvg.onanestimateofthechromaticindexofap-graph[j].diskretanaliz,1964,3(1):25-30.
|
[2] | vizingvg.criticalgraphswithgivenchromaticclass[j].diskretanaliz,1965,5(1):9-17.
|
[3] | sandersdp,zhaoy.planargraphsofmaximumdegreesevenareclass1[j].combintheoryserb,2001,83(2):201-212.
|
[4] | zhoug.anoteongraphsofclass1[j].discretemath,2003,263(1/3):339-345.
|
[5] | buy,wangw.somesufficientconditionsforaplanargraphofmaximumdegreesixtobeclass1[j].discretemath,2006,306(13):1440-1445.
|
[6] | zhangl.everyplanarwithmaximumdegree7isofclass1[j].graphscombin,2000,16(4):467-495.
|
[7] | lix,luor.edgecoloringofembeddedgraphswithlargegirth[j].graphscombin,2003,19(3):393-401.
|
[8] | wangweifan,chenyongzhu.asufficientconditionforaplanargraphtobeclass1[j].theoretcomputersci,2007,385(1/3):71-77.
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