Title of article :
Derivations in semiprime rings and Banach algebras
Author/Authors :
Sahebi, Sh. Department of Mathematics - Islamic Azad University, Central Tehran Branch , Rahmani, V. Department of Mathematics - Islamic Azad University, Central Tehran Branch
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.
Keywords :
prime ring , semiprime ring , derivation , Utumi quotient ring , Banach Algebra
Journal title :
Astroparticle Physics