Counterexamples to the Theorems of Integrity of Prisms and Ladders

M. Atici1, A. Kirlangice 2
1 International Computer Institute Ege University 35100 Bornova – Izmir, Turkey
2Department of Mathematics Science Faculty Ege University 35100 Bornova – Izmir, Turkey

Abstract

We give counterexamples for two theorems given for the integrity of prisms and ladders in [2] (Theorem 2.17 and Theorem 2.18 in [1]). We also compute the integrity of several special graphs.