For C*-algebras A and B, the identity map from \documentclass[12pt]{minimal}
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\begin{document}$$A \widehat{\otimes} B $$\end{document} into A\documentclass[12pt]{minimal}
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\begin{document}$$\otimes$$\end{document}λB is shown to be injective. Next, we deduce that the center of the completion of the tensor product A⊗B of two C*-algebras A and B with centers Z(A) and Z(B) under operator space projective norm is equal to \documentclass[12pt]{minimal}
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\begin{document}$$Z(A)\widehat{\otimes}Z(B)$$\end{document} . A characterization of isometric automorphisms of \documentclass[12pt]{minimal}
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\begin{document}$$A \widehat{\otimes} B$$\end{document} and A\documentclass[12pt]{minimal}
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\begin{document}$$\otimes$$\end{document}hB is also obtained.