Hamiltonian paths and cycles with prescribed edges in the 3-ary n-cube

  • Authors:
  • Shiying Wang;Jing Li;Ruixia Wang

  • Affiliations:
  • School of Mathematical Sciences, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China;School of Mathematical Sciences, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China;School of Mathematical Sciences, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2011

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Abstract

The k-ary n-cube has been one of the most popular interconnection networks for massively parallel systems. Given a set P of at most 2n-2 (n=2) prescribed edges and two vertices u and v, we show that the 3-ary n-cube contains a Hamiltonian path between u and v passing through all edges of P if and only if the subgraph induced by P consists of pairwise vertex-disjoint paths, none of them having u or v as internal vertices or both of them as end-vertices. As an immediate result, the 3-ary n-cube contains a Hamiltonian cycle passing through a set P of at most 2n-1 prescribed edges if and only if the subgraph induced by P consists of pairwise vertex-disjoint paths.