BANACH ALGEBRAS WITH INVOLUTION AND SPECTRAL SETS

Original Articles

BANACH ALGEBRAS WITH INVOLUTION AND SPECTRAL SETS

Published in: Quaestiones Mathematicae
Volume 22 , issue 4 , 1999 , pages: 475–479
DOI: 10.1080/16073606.1999.9632099
Author(s): A. El Kinani Department of Mathematics, Morocco
Keywords: Primary 46K99 , Secondary 46H30 , Primary 46K99 , Secondary 46H30
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Abstract

Using the notion of a spectral set introduced by von-Neumann, we give some characterizations of C+ -algebras. Two conditions, each of which is necessary and sufficient for a Banach algebra to be uniform, are also obtained.
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