Abstract
Let R be a prime ring of characteristic different from 2, Qr its right Martindale quotient ring and C its extended centroid. Suppose that F, G are generalized skew derivations of R associated with the same automorphism α of R, I a non-central ideal of R and . If , for all , then there exist and such that , for any , with and . In particular, if α is not an inner automorphism of R, then F(x) = bx, , for any , with .
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