Some subsemigroups of extensions of C*-algebras

Yutaka KATABAMI; Masaru NAGISA

doi:10.2969/jmsj/1191418645

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Home > Journals > J. Math. Soc. Japan > Volume 56 > Issue 2 > Article

April, 2004 Some subsemigroups of extensions of

C^*

-algebras

Yutaka KATABAMI, Masaru NAGISA

J. Math. Soc. Japan 56(2): 561-569 (April, 2004). DOI: 10.2969/jmsj/1191418645

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Abstract

In this paper we investigate the structure of the subsemigroup generated by the inner automorphisms in $\mathrm{Ext}(\mathit{L},K)$ . As an application, we give a new point of view to the example of J. Plastiras, which are two $C^*$ -algebras $\mathfrak{U}$ and a satisfying $\mathfrak{U}\not\cong \mathfrak{B}$ and $M_{2}\otimes \mathfrak{U}\cong M_{2}\otimes \mathfrak{B}$ .

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Yutaka KATABAMI. Masaru NAGISA. "Some subsemigroups of extensions of $C^*$ -algebras." J. Math. Soc. Japan 56 (2) 561 - 569, April, 2004. https://doi.org/10.2969/jmsj/1191418645