
doi: 10.1007/bf03323547
Let \(R\) be a ring, \(S\) a nonempty subset of \(R\), and \(Z\) the center of \(R\). For \(x,y\in R\) denote \(xy- yx\) by \([x, y]\) and \(xy + yx\) by \(x\circ y\). Let \(d\) be a derivation on \(R\). For prime \(R\) and \(S\) either an ideal or a Lie ideal, the authors study commutativity under the assumption that one of the following holds for all \(x,y\in S\): (i) \(d([x, y])= [x, y]\), (ii) \(d(x\circ y)= x\circ y\), (iii) \(d(x)\circ d(y)= 0\), (iv) \(d(x)\circ d(y)= x\circ y\). The following results are typical: (A) Let \(R\) be a prime ring with \(\operatorname{char} (R)\neq 2\) and \(U\) a nonzero Lie ideal. If \(R\) admits a derivation \(d\) such that \(d([u, v])= [u, v]\) for all \(u,v\in U\), then \(U\subseteq Z\); (B) Let \(R\) be a prime ring and \(I\) a nonzero ideal of \(R\). If \(R\) admits a derivation \(d\) such that \(d(x\circ y)= x\circ y\) for all \(x, y\in I\), then \(R\) is commutative.
Prime and semiprime associative rings, derivations, Generalizations of commutativity (associative rings and algebras), Lie ideals, Derivations, actions of Lie algebras, prime rings, commutativity theorems
Prime and semiprime associative rings, derivations, Generalizations of commutativity (associative rings and algebras), Lie ideals, Derivations, actions of Lie algebras, prime rings, commutativity theorems
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