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چکیده
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In this paper we consider the condition Cθ w for a continuous linear map T : U → U, where U is a Banach algebra with unity 1, θ : U → U is an continuous automorphism, and w 6= 0 is a left (right) separating point of U. In fact, under these conditions we prove that T is a right (left) θ-centralizer or θ-centralizer.
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