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An Engel condition with b-generalized derivations for Lie ideals

机译:具有B-Generalizative Derivations的engel条件是理想的

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Let R be a prime ring with the extended centroid C, L a noncommutative Lie ideal of R and g a nonzero b-generalized derivation of R. For x, y epsilon R, let [x, y] = xy - yx. We prove that if [[. . . [[g(x(n0)), x(n1)], x(n2)],...], x(nk)] = 0 for all x epsilon L, where n(0), n(1), . . . , n(k) are fixed positive integers, then there exists lambda epsilon C such that g(x) = lambda(x) for all x epsilon R except when R subset of M-2(F), the 2 x 2 matrix ring over a field F. The analogous result for generalized skew derivations is also described. Our theorems naturally generalize the cases of derivations and skew derivations obtained by Lanski in [C. Lanski, An Engel condition with derivation, Proc. Amer. Math. Soc. 118 (1993), 75-80, Skew derivations and Engel conditions, Comm. Algebra 42 (2014), 139-152.]
机译:设R是质心C扩展的素环,L是R的非交换李理想,g是R的非零b-广义导子。对于x,yεR,设[x,y]=xy-yx。我们证明了如果[…[[g(x(n0)),x(n1)],x(n2)],…],对于所有xεL,x(nk)]=0,其中n(0),n(1),n(k)是固定的正整数,则存在λεC,使得g(x)=λ(x)对于所有xεR,除了当M-2(F)的R子集,域F上的2x2矩阵环外。还描述了广义斜导子的类似结果。我们的定理自然地概括了Lanski在[C.Lanski,《带导数的Engel条件》,Proc.Amer.Math.Soc.118(1993),75-80,《斜导和Engel条件》,Comm.代数42(2014),139-152]中获得的导子和斜导子的情况

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