The super spanning connectivity and super spanning laceability of the enhanced hypercubes

  • Authors:
  • Chung-Hao Chang;Cheng-Kuan Lin;Jimmy J. Tan;Hua-Min Huang;Lih-Hsing Hsu

  • Affiliations:
  • The Division of General Education, Ming Hsin University of Science and Technology, Hsinchu, China 304;Department of Computer Science, National Chiao Tung University, Hsinchu, China 300;Department of Computer Science, National Chiao Tung University, Hsinchu, China 300;Department of Mathematics, National Central University, Chung-Li, China 320;Department of Computer Science and Information Engineering, Providence University, Taichung, China 433

  • Venue:
  • The Journal of Supercomputing
  • Year:
  • 2009

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Abstract

A k -container C(u,v) of a graph G is a set of k disjoint paths between u and v. A k-container C(u,v) of G is a k * -container if it contains all vertices of G. A graph G is k * -connected if there exists a k *-container between any two distinct vertices of G. Therefore, a graph is 1*-connected (respectively, 2*-connected) if and only if it is Hamiltonian connected (respectively, Hamiltonian). A graph G is super spanning connected if there exists a k *-container between any two distinct vertices of G for every k with 1驴k驴驴(G) where 驴(G) is the connectivity of G. A bipartite graph G is k * -laceable if there exists a k *-container between any two vertices from different partite set of G. A bipartite graph G is super spanning laceable if there exists a k *-container between any two vertices from different partite set of G for every k with 1驴k驴驴(G). In this paper, we prove that the enhanced hypercube Q n,m is super spanning laceable if m is an odd integer and super spanning connected if otherwise.