Panpositionable hamiltonicity and panconnectivity of the arrangement graphs

Abstract

The arrangement graph A(n,k) is a generalization of the star graph. It is more flexible in its size than the star graph. There are some results concerning hamiltonicity and pancyclicity of the arrangement graphs. In this paper, we propose a new concept called panpositionable hamiltonicity. A hamiltonian graph G is panpositionable if for any two different vertices x and y of G and for any integer l satisfying d(x,y) <= l <= vertical bar v(G)vertical bar - d(x,y), there exists a hamiltonian cycle C of G such that the relative distance between x and y on C is l. A graph G is panconnected if there exists a path of length l joining any two different vertices x and y with d(x,y) <= l <= vertical bar v(G)vertical bar - 1. We show that An, k is panpositionable hamiltonian and panconnected if k >= 1 and n - k >= 2. (c) 2007 Elsevier Inc. All rights reserved.