Posner's second theorem, multilinear polynomials and vanishing derivations
Posner's second theorem, multilinear polynomials and vanishing derivations
Abstract Let K be a commutative ring with unity, R a prime K-algebra of characteristic different from 2, d and δ non-zero derivations of R , f (x 1 ,…, x n ) a multilinear polynomial over K .If then f ( x 1 ,…, x n is central-valued on …