The Hamiltonian property of linear functions

  • Authors:
  • F. K. Hwang

  • Affiliations:
  • AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ, USA

  • Venue:
  • Operations Research Letters
  • Year:
  • 1987

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Abstract

Consider a digraph G(n, q, r) with n nodes and n links i - qi + r, i = 0, 1,..., n - 1, where q and r are given. The topologies of many computer networks use G(n, q, r) as basic building block. A digraph is called Hamiltonian if it contains a circuit spanning all nodes. The Hamiltonian property of a network topology provides the capability of configuring the interconnection network as a linear array, which is the configuration with the broadest practical significance, of either n - 1 or n nodes in the presence of a single faulty node or link. In this paper we give necessary and sufficient conditions for G(n, q, r) to be Hamiltonian.