Abstract
In this paper, we consider the fault hamiltonicity and the fault hamiltonian connectivity of the augmented cubes AQ{n}. Assume that F ⊆ V(AQ{n}) ∪ E(AQ{n}) and n ≥ 4. We prove that AQ{n} - F is hamiltonian if |F| ≤ 2n - 3 and that AQ{n} - F is hamiltonian connected if |F| ≤ 2n - 4. Moreover, these bounds are tight.