Abstract
Let R be a prime ring with its Utumi ring of quotients U and extended centroid C. Suppose that F is a generalized derivation of R and L is a noncentral Lie ideal of R such that F(u)[F(u), u]n = 0 for all u ∈ L, where n ⩾ 1 is a fixed integer. Then one of the following holds:
-
(1)
there exists λ ∈ C such that F(x) = λx for all x ∈ R
-
(2)
R satisfies s 4 and F(x) = ax + xb for all x ∈ R, with a, b ∈ U and a − b ∈ C
-
(3)
char(R) = 2 and R satisfies s 4.
As an application we also obtain some range inclusion results of continuous generalized derivations on Banach algebras.
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Dhara, B., Kar, S. & Mondal, S. Generalized derivations on Lie ideals in prime rings. Czech Math J 65, 179–190 (2015). https://doi.org/10.1007/s10587-015-0167-4
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DOI: https://doi.org/10.1007/s10587-015-0167-4
Keywords
- prime ring
- derivation
- generalized derivation
- extended centroid
- Utumi quotient ring
- Lie ideal
- Banach algebra