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Commuting and Centralizing Generalized Derivationson Lie Ideals in Prime Rings

机译:通勤和集中素环上的广义导子李理想

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Let R be a noncommutative prime ring of characteristic different from 2, U the Utumi quotient ring of R, C the extended centroid of R, and L a noncentral Lie ideal of R. If F and G are generalized derivations of R and k ≥ 1 a fixed integer such that [F(x),x]_kx - x[G(x),x]_k = 0 for any x e L, then one of the following holds: 1) either there exists ana ∈ U and an α ∈ C such that F(x) = xa and G(x) = (a + α)x for all x ∈ R 2) or R satisfies the standard identity S4(x1,... ,x4) and one of the following conclusions occurs: (a) there exist a, b,c,q ∈ U, such that a - b + c- q ∈ C and F(x) = ax + xb, G(x) = cx + xq for all x ∈R; (b) there exist a,b,c∈ U and a derivation d of U such that F(x) = ax + d(x) and G(x) = bx + xc - d(x) for all x ∈ R, with a + b - c ∈ C.
机译:设R为特性不同于2的非对易素环,U为R的Utumi商环,C为R的扩展质心,L为R的非中心Lie理想。如果F和G是R的广义导数,且k≥1一个固定整数,使得对于任何xe L,[F(x),x] _kx-x [G(x),x] _k = 0,则下列条件之一成立:1)存在ana∈U和a ∈C,对于所有x∈R 2)或R满足F(x)= xa和G(x)=(a +α)x或R满足标准身份S4(x1,...,x4)和以下条件之一得出结论:(a)存在a,b,c,q∈U,使得a-b + c- q∈C且对于所有x,F(x)= ax + xb,G(x)= cx + xq ∈R; (b)存在a,b,c∈U和U的导数d,使得对于所有x∈R,F(x)= ax + d(x)和G(x)= bx + xc-d(x) ,其中a + b-c∈C。

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