ON THE MINIMUM MODULUS OF AN ARBITRARY LINEAR OPERATOR

DOI10.1080/16073606.1991.9631624zbMath0751.47001OpenAlexW1974472514MaRDI QIDQ3971672

Louis E. Labuschagne

Publication date: 25 June 1992

Published in: Quaestiones Mathematicae (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1080/16073606.1991.9631624

zbMATH Keywords

minimum modulusclosable operatorindex of an operatorrelatively open operator

Mathematics Subject Classification ID

General (adjoints, conjugates, products, inverses, domains, ranges, etc.) (47A05)

Related Items (5)

THE INSTABILITY OF A CLASS OF UNBOUNDED NON-SEMI-FREDHOLM TYPE OPERATORS UNDER COMPACT PERTURBATIONS ⋮ CHARACTERISATIONS OF OPERATORS OF LOWER SEMI-FREDHOLM TYPE IN NORMED LINEAR SPACES ⋮ The perturbation of relatively open operators with reduced index ⋮ Quantities related to the openness constant of linear operators ⋮ On a theorem of Kalton and Wilansky concerning Tauberian operators

Cites Work

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• Product of linear operators with closed range
• Semifredholm maps of FK spaces
• CHARACTERISATIONS OF OPERATORS OF LOWER SEMI-FREDHOLM TYPE IN NORMED LINEAR SPACES

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