Abstract
Let R be a non-commutative prime ring, Z(R) its center, Q its right Martindale quotient ring, C its extended centroid, \(F\ne 0\) an b-generalized skew derivation of R, L a non-central Lie ideal of R, \(0\ne a\in R\) and \(n\ge 1\) a fixed integer. In this paper, we prove the following two results:
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1.
If R has characteristic different from 2 and 3 and \(a[F(x),x]^n=0\), for all \(x\in L\), then either there exists an element \(\lambda \in C\), such that \(F(x)=\lambda x\), for all \(x\in R\) or R satisfies \(s_4(x_1,\ldots ,x_4)\), the standard identity of degree 4, and there exist \(\lambda \in C\) and \(b\in Q\), such that \(F(x)=bx+xb+\lambda x\), for all \(x\in R\).
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2.
If \(\mathrm{{char}}(R)=0\) or \(\mathrm{{char}}(R) > n\) and \(a[F(x),x]^n\in Z(R)\), for all \(x\in R\), then either there exists an element \(\lambda \in C\), such that \(F(x)=\lambda x\), for all \(x\in R\) or R satisfies \(s_4(x_1,\ldots ,x_4)\).
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This work is partially supported by the Training Program of International Exchange and Cooperation of the Beijing Institute of Technology. The work of the second author is partially supported by the National Natural Science Foundation of China (Grant No. 10871023).
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De Filippis, V., Wei, F. b-Generalized Skew Derivations on Lie Ideals. Mediterr. J. Math. 15, 65 (2018). https://doi.org/10.1007/s00009-018-1103-2
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DOI: https://doi.org/10.1007/s00009-018-1103-2