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Extreme Hyponormal Operators

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Special Classes of Linear Operators and Other Topics

Part of the book series: Operator Theory: Advances and Applications ((OT,volume 28))

Abstract

Main developments in the field of hyponormal operators are due to a few specific inequalities. The oldest and best known inequality was discovered by Putnam [18]. Then, Berger and Shaw [4] obtained a sharper inequality. Afterwards, a few estimates of an intrinsic object attached to certain hyponormal opertors, namely the principal function, turned out to be the finest quantitative results.

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Author information

Authors and Affiliations

  1. Department of Mathematics, INCREST, Bdul Păcii 220, 79622, Bucharest, Romania

    Mihai Putinar

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  1. Mihai Putinar
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Editor information

Editors and Affiliations

  1. Department of Mathematics, INCREST, Bd. Pacii 220, 79622, Bucharest, Romania

    Gr. Arsene

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© 1988 Birkhäuser Verlag Basel

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Putinar, M. (1988). Extreme Hyponormal Operators. In: Arsene, G. (eds) Special Classes of Linear Operators and Other Topics. Operator Theory: Advances and Applications, vol 28. Birkhäuser Basel. https://doi.org/10.1007/978-3-0348-9164-6_18

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  • DOI: https://doi.org/10.1007/978-3-0348-9164-6_18

  • Publisher Name: Birkhäuser Basel

  • Print ISBN: 978-3-7643-1970-0

  • Online ISBN: 978-3-0348-9164-6

  • eBook Packages: Springer Book Archive

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