THE RANGE INCLUSION RESULTS FOR ALGEBRAIC NIL DERIVATIONS ON COMMUTATIVE AND NONCOMMUTATIVE ALGEBRAS

Abstract

Let A be an algebra and D a derivation of A. Then D is called algebraic nil if for any <TEX>$x{\in}A$</TEX> there is a positive integer n = n(x) such that <TEX>$D^{n(x)}(P(x))=0$</TEX>, for all <TEX>$P{\in}\mathbb{C}[X]$</TEX> (by convention <TEX>$D^{n(x)}({\alpha})=0$</TEX>, for all <TEX>${\alpha}{\in}\mathbb{C}$</TEX>). In this paper, we show that any algebraic nil derivation (possibly unbounded) on a commutative complex algebra A maps into N(A), where N(A) denotes the set of all nilpotent elements of A. As an application, we deduce that any nilpotent derivation on a commutative complex algebra A maps into N(A), Finally, we deduce two noncommutative versions of algebraic nil derivations inclusion range.