On the operator equation .
Thaheem, A.B. (1986)
International Journal of Mathematics and Mathematical Sciences
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Thaheem, A.B. (1986)
International Journal of Mathematics and Mathematical Sciences
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A. B. Thaheem (1981)
Rendiconti del Seminario Matematico della Università di Padova
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Wright, Steve (1983)
International Journal of Mathematics and Mathematical Sciences
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David Sherman (2009)
Studia Mathematica
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In functional analysis, approximative properties of an object become precise in its ultrapower. We discuss this idea and its consequences for automorphisms of II₁ factors. Here are some sample results: (1) an automorphism is approximately inner if and only if its ultrapower is ℵ₀-locally inner; (2) the ultrapower of an outer automorphism is always outer; (3) for unital *-homomorphisms from a separable nuclear C*-algebra into an ultrapower of a II₁ factor, equality of the induced traces...
Thaheem, A.B. (1989)
International Journal of Mathematics and Mathematical Sciences
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Ravindran, K.T., Sudheer, K. (2010)
APPS. Applied Sciences
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F. S. Cater, A. B. Thaheem (1996)
Rendiconti del Seminario Matematico della Università di Padova
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Thaheem, A.B., Mohammad, Noor (1990)
International Journal of Mathematics and Mathematical Sciences
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Giovanni Cutolo (1992)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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A characterization of central automorphisms of groups is given. As an application, we obtain a new proof of the centrality of power automorphisms.