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不含三角形图的正常染色路和正常染色圈
引用本文:丁录顺,王光辉,颜谨. 不含三角形图的正常染色路和正常染色圈[J]. 运筹学杂志, 2014, 0(3): 116-120
作者姓名:丁录顺  王光辉  颜谨
作者单位:山东大学数学学院,济南250100
基金项目:国家自然科学基金(No.11271230),山东省自然科学基金(No.ZR2012AM023)
摘    要:图G为边染色图,对G中的任一顶点v,定义v的色度dc(v):G中与顶点v相关联的边中不同染色的数目.用δc(G)表示图G的最小色度,即δc(G)=min{dc(v):v∈G}.若图G为不含三角形的边染色图,且δc(G)≥2,则G含长为4d-2的正常染色路或长至少为2d-2的正常染色圈.

关 键 词:  正常染色路  正常染色圈

The properly colored paths and cycles for the triangle-free graphs
DING Lushun,WANG Guanghui,YAN Jin. The properly colored paths and cycles for the triangle-free graphs[J]. , 2014, 0(3): 116-120
Authors:DING Lushun  WANG Guanghui  YAN Jin
Affiliation:DING Lushun WANG Guanghui YAN Jin
Abstract:Let G be an edge colored graph, v be a vertex in G. de(v) denotes the color degree of a vertex v, i.e. the number of edges with distinct colors incident to v. At the same time, δc(G) denotes the minimum color degree of G, i.e. δc(G) = min{dC(v) : v C G}. Let G be an edge colored triangle-free graph such that δc(G) ≥2. We prove that G contains a properly colored path of length 4d - 2 or a properly colored cycle of length at least 2d- 2.
Keywords:graph   properly colored path   properly colored cycle
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