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Automorphisms and Tensor Products of Algebras
In this note we prove that if A is a complex Banach algebra with identity, then the automorphism on A®A determined by Q(a®b)=b®a is inner if and only if A= M"(C).Let Abe a C*-algebra and let A ®* A be the C*-tensor product of A with itself.Let 6 be the …