Generalized derivations of prime rings on multilinear polynomials with annihilator conditions

Let K be a commutative ring with unity, R be a prime K-algebra with characteristic not 2, U be the right Utumi quotient ring of R, C the extended centroid of R, I a nonzero right ideal of R and a a fixed element of R. Let g be a generalized derivation of R and f(X1,..., Xn) a multilinear polynomial over K. If ag(f(x1,...,xn))f(x1,...,xn)=0 for all x1,...,xn \in I, then one of the following holds: (1) aI=ag(I)=0; (2) g(x)=bx+[c,x] for all x\in R, where b,c\in U. In this case either [c,I]I=0=abI or aI=0=a(b+c)I; (3) [f(X1,...,Xn),Xn+1]Xn+2 is an identity for I.

Anahtar Kelimeler:

Prime ring, derivation, generalized derivation, right Utumi quotient ring, differential identity, generalized polynomial identity

Generalized derivations of prime rings on multilinear polynomials with annihilator conditions

Keywords:

Prime ring, derivation, generalized derivation, right Utumi quotient ring, differential identity, generalized polynomial identity,

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