On the range of a derivation

Document Type : Regular Paper


1 Kashmar Higher Education Institute, Kashmar, Iran

2 Department of Mathematics, Mashhad Branch, Islamic Azad University, Mashhad, Iran


Let  be a Banach algebra and  a derivation. In this paper, it is proved, under certain conditions, that , where  is the Jacobson radical of . Moreover, we prove that if  is unital and  is a continuous derivation, then , where  denotes the set of all primitive ideals such that  is commutative,  denotes the set of all maximal (modular) ideals such that  is commutative, and  is the set of all non-zero multiplicative linear functionals from  into . In addition, we present several results about the range of a derivation on algebras having the property ( ).