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Sibirskii Matematicheskii Zhurnal, 2009, Volume 50, Number 4, Pages 806–817
(Mi smj2002)
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This article is cited in 8 scientific papers (total in 8 papers)
Cocentralizing and vanishing derivations on multilinear polynomials in prime rings
V. De Filippis Dipartimento di Scienze per l'Ingegneria e per l'Architettura
Sezione di Matematica e Eidomatica Universitá di Messina, Facoltá di Ingegneria, Messina, Italia
Abstract:
Let $R$ be a prime ring of characteristic different from 2 and extended centroid $C$ and let
$f(x_1,\dots,x_n)$ be a multilinear polynomial over $C$ not central-valued on $R$, while $\delta$ is a nonzero derivation of $R$. Suppose that $d$ and $g$ are derivations of $R$ such that
$$
\delta(d(f(r_1,\dots,r_n))f(r_1,\dots,r_n)-f(r_1,\dots,r_n)g(f(r_1,\dots,r_n)))=0
$$
for all $r_1,\dots,r_n\in R$. Then $d$ and $g$ are both inner derivations on $R$ and one of the following holds: (1) $d=g=0$; (2) $d=-g$ and $f(x_1,\dots,x_n)^2$ is central-valued on $R$.
Keywords:
prime ring, derivation, differential identity.
Received: 12.03.2008
Citation:
V. De Filippis, “Cocentralizing and vanishing derivations on multilinear polynomials in prime rings”, Sibirsk. Mat. Zh., 50:4 (2009), 806–817; Siberian Math. J., 50:4 (2009), 637–646
Linking options:
https://www.mathnet.ru/eng/smj2002 https://www.mathnet.ru/eng/smj/v50/i4/p806
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