Sahebi, S., Rahmani, V. (2013). Derivations in semiprime rings and Banach algebras. Journal of Linear and Topological Algebra (JLTA), 02(03), 129-135.

Sh Sahebi; V Rahmani. "Derivations in semiprime rings and Banach algebras". Journal of Linear and Topological Algebra (JLTA), 02, 03, 2013, 129-135.

Sahebi, S., Rahmani, V. (2013). 'Derivations in semiprime rings and Banach algebras', Journal of Linear and Topological Algebra (JLTA), 02(03), pp. 129-135.

Sahebi, S., Rahmani, V. Derivations in semiprime rings and Banach algebras. Journal of Linear and Topological Algebra (JLTA), 2013; 02(03): 129-135.

Derivations in semiprime rings and Banach algebras

^{}Department of Mathematics, Islamic Azad University, Central Tehran Branch, P. O. Box 14168-94351, Tehran, Iran.

Abstract

Let R be a 2-torsion free semiprime ring with extended centroid C, U the Utumi quotient ring of R and m; n > 0 are xed integers. We show that if R admits derivation d such that b[[d(x); x]n; [y; d(y)]m] = 0 for all x; y 2 R where 0 ̸= b 2 R, then there exists a central idempotent element e of U such that eU is commutative ring and d induce a zero derivation on (1 e)U. We also obtain some related result in case R is a non-commutative Banach algebra and d continuous or spectrally bounded.