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可圈的一个充分条件(英文)

A Sufficient Condition of Cyclability
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摘要 本文我们证明如下结果:设G=(V,E)是一个n(n≥3)阶k-连通(k≥2)图,记X1,X2,…,Xk为V的子集,X=X1∪X2∪…∪Xk.若对每个i,i=1,2,…,k,满足:对任意的u,v∈Xi,有d(u)+d(v)≥n或|N(u)∪N(v)|≥n-δ或|N(u)∩N(v)|≥α,这里δ是G的最小度,α是G的独立数,则G是X-可圈的. We prove the following result: let G: (V, E) be a k connected graph, k ≥ 2, of order n ≥ 3. Denote by X1,X2,..,Xk subsets of vertex set V and let X = X1 ∪ X2 ∪ … ∪ Xk. If for each i,i = 1,2,…, k, and each pair of nonadjacent vertices u.v ∈ X,. we have d(u) + d(v) ≥ n, or [ N(u) U N(v) ≥ n-δ or N(u) ∩ N(v) , whereδis minimum degree of Ganda is independent number of G, thenGis X- cy- clable.
出处 《应用数学》 CSCD 北大核心 2008年第1期162-166,共5页 Mathematica Applicata
基金 the National Natural Science Foundation of China(10501021) the Natural Science Foundation of the Depart ment of Education of Anhui(KJ2007B322ZC)
关键词 哈密尔顿图 可圈性 Graphs Cycle Hamiltonian graphs Cyclability
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参考文献7

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