CI-property for the group \((\mathbb{Z}_p)^2\times\mathbb{Z}_q\times\mathbb{Z}_r\)

Abstract

In this paper we prove that the group \((\mathbb{Z}_p)^2\times\mathbb{Z}_q\times\mathbb{Z}_r\) is CI-group, where \(p, q,r\) are primes such that \(q\) and \(r\) divide \(p-1\), and \(r\) divides \(q-1\).