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线图上次泛圈性的两条独立边的度和条件 被引量:2

Degree Sums of Two Independent Edges Condition for Subpancyclic in Line Graphs
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摘要 给定一个n(n≥72)阶图G,满足q1(G)=min{d(u)+d(v):uv∈E(G)}≥8,得出结论:若围长g(G)≥5且q2(G)=min{d(ei)+d(ej):ejej E(L(G))且ei,ej∈E(G)}>2 2n+1时,L(G)是次泛圈图;若围长g(G)≥4且q22(G)-2q2(G)>8n时,L(G)是次泛圈图,而且2 2n+1,8n这两个界都是最好可能的. Let G be a graph of order n ( n ≥ 72) which satisfies condition of q1( G ) = min{d ( u ) + d ( v ) : uv ∈ E ( G ) } ≥ 8.If girth g(G)≥5,q2(G)=min{d(ei)+d(ej):eiej E(L(G)) and ei,ej∈E(G)}〉2√2n+1,then line graph L(G)is subpancyclic.If girth g(G)≥4,q2^2(G)-2q2(G)〉8n then L(G)is subpancyclic.And the bound of 2√2n+1,8n all are the best possible
出处 《江西师范大学学报(自然科学版)》 CAS 北大核心 2008年第6期709-713,共5页 Journal of Jiangxi Normal University(Natural Science Edition)
基金 国家自然科学基金(10671014)资助项目
关键词 线图 次泛圈图 泛圈图 line graph subpancyclic graph pancyclic graph
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