Invariant ideals of twisted crossed products

Abstract

We prove a result concerning the inclusion of non-trivial invariant ideals inside non-trivial ideals of a twisted crossed product. We will also give results concerning the primeness and simplicity of crossed products of twisted actions of locally compact groups on $C^{\ast }$-algebras.

A mistake in the sentance after the proof of Lemma 2 was corrected. We would like to thank Prof. Echterhoff for pointing out the mistake to us