## Abstract

Let G be a 2-connected graph of order n. For any u ∈ V (G) and l ∈ {m, m + 1,..., n}, if G has a cycle of length l, then G is called [m, n]-pancyclic, and if G has a cycle of length l which contains u, then G is called [m, n]-vertex pancyclic. Let δ(G) be a minimum degree of G and let N_{G}(x) be the neighborhood of a vertex x in G. In [Australas. J. Combin. 12 (1995), 81-91] Liu, Lou and Zhao proved that if |N_{G}(u) ∪ N_{G}(v)| + δ(G) ≥ n + 1 for any nonadjacent vertices u, v of G, then G is [3, n]-vertex pancyclic. In this paper, we prove if n ≥ 6 and |N_{G}(u)∪N_{G}(v)|+d_{G}(w) ≥ n for every triple independent vertices u, v, w of G, then (i) G is [3,n]-pancyclic or isomorphic to the complete bipartite graph K_{n/2,n/2}, and (ii) G is [5, n]-vertex pancyclic or isomorphic to the complete bipartite graph K_{n/2,n/2}.

Original language | English |
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Pages (from-to) | 15-25 |

Number of pages | 11 |

Journal | Australasian Journal of Combinatorics |

Volume | 40 |

Publication status | Published - 2008 Dec 1 |

Externally published | Yes |

## ASJC Scopus subject areas

- Discrete Mathematics and Combinatorics