Edge-bipancyclicity and edge-fault-tolerant bipancyclicity of bubble-sort graphs

  • Authors:
  • Yosuke Kikuchi;Toru Araki

  • Affiliations:
  • Department of Electronics and Computer Engineering, Tsuyama National College of Technology, Tsuyama, Okayama, Japan;Department of Computer and Information Sciences, Iwate University, Morioka, Iwate, Japan

  • Venue:
  • Information Processing Letters
  • Year:
  • 2006

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Abstract

A bipartite graph G is bipancyclic if G has a cycle of length l for every even 4 ≤ l ≤ |V(G)|. For a bipancyclic graph G and any edge e, G is edge-bipancyclic if e lies on a cycle of any even length l of G. In this paper, we show that the bubble-sort graph Bn is bipancyclic for n ≥ 4 and also show that it is edge-bipancyclic for n ≥ 5. Assume that F is a subset of E(Bn). We prove that Bn - F is bipancyclic, when n ≥ 4 and |F| ≤ n-3. Since Bn is a (n - 1)-regular graph, this result is optimal in the worst case.