Embedding geodesic and balanced cycles into hypercubes

  • Authors:

  • Pao-Lien Lai;Chang-Hsiung Tsai;Hong-Chun Hsu

  • Affiliations:

  • National Dong Hwa University, Department of Computer Science and Information Engineering, Hualien, Taiwan, R.O.C.;National Dong Hwa University, Department of Computer and Information Science, Hualien, Taiwan, R.O.C.;Tzu Chi University, Department of Medical Informatics, Haulien, Taiwan, R.O.C.

  • Venue:
  • WSEAS Transactions on Mathematics
  • Year:
  • 2009

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Abstract

A graph G is said to be pancyclic if it contains cycles of all lengths from 4 to |V (G)| in G. For any two vertices u, v ∈ V (G), a cycle is called a geodesic cycle with u and v if a shortest path joining u and v lies on the cycle. Let G be a bipartite graph. For any two vertices u and v in G, a cycle C is called a balanced cycle between u and v if dC(u, v) = max{dC(x, y) | dG(x, u) and dG(y, v) are even, resp. for all x, y ∈ V (G)}. A bipartite graph G is geodesic bipancyclic (respectively, balanced bipancyclic) if for each pair of vertices u, v ∈ V (G), it contains a geodesic cycle (respectively, balanced cycle) of every even length of k satisfying max{2dG(u, v), 4} ≤ k ≤ |V (G)| between u and v. In this paper, we prove that Qn is geodesic bipancyclic and balanced bipancyclic if n ≥ 2.