J4 ›› 2009, Vol. 47 ›› Issue (6): 1135-.
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DUAN Ziming1, MIAO Zhengke2, MIAO Lianying1
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Abstract:
The authors gave some general propositions of L(d,1,1)labeling. An upper bound of λd,1,1(G) was given for any graph with maximum degree Δ by an algorithm which is λd,1,1(G)≤Δ3-Δ2+dΔ. For any tree of maximum degree Δ, we have d+Δ-1≤λd,1,1(T)≤d+2Δ-2, moreover, the lower and upper bounds are both attainable. The values of L(d,1,1)labeling number for quasi regular tree TΔ and any regular caterpillar Catnwere also given, for d≥2.
Key words: graph labeling, L(d,1,1)labeling, frequency assignment, tree
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DUAN Ziming, MIAO Zhengke, MIAO Lianying. L(d,1,1)-Labeling of Graphs[J].J4, 2009, 47(6): 1135-.
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http://xuebao.jlu.edu.cn/lxb/EN/Y2009/V47/I6/1135
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