Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)



On majorization and normality of operators

Author: Mehdi Radjabalipour
Journal: Proc. Amer. Math. Soc. 62 (1977), 105-110
MSC: Primary 47B20
MathSciNet review: 0430851
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Abstract: Recent results of C. R. Putnam are used to find some conditions for normality of operators. The emphasis is on the classes of spectral operators (defined by N. Dunford) and M-hyponormal operators (defined by J. G. Stampfli).

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Keywords: Normal operator, spectral operator, M-hyponormal operator, quasi-similarity
Article copyright: © Copyright 1977 American Mathematical Society