Longest fault-free paths in star graphs with edge faults

In this paper, we aim to embed longest fault-free paths in an n-dimensional star graph with edge faults. When n ≥ 6 and there are n - 3 edge faults, a longest fault-free path can be embedded between two arbitrary distinct vertices, exclusive of two exceptions in which at most two vertices are excluded. Since the star graph is regular of degree n - 1, n - 3 (edge faults) is maximal in the worst case. When n ≥ 6 and there are n - 4 edge faults, a longest fault-free path can be embedded between two arbitrary distinct vertices. The situation of n < 6 is also discussed.