Characterizations of Lie triple derivations on generalized matrix algebras

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Let be a commutative ring with unity and be a generalized matrix algebra. In this article, we give the structure of Lie triple derivation on a generalized matrix algebra and prove that under certain appropriate assumptions on is proper, i.e., where δ is a derivation on and χ is a mapping from into its center which annihilates all second commutators in i.e., for all