Measures of Noncompactness and Upper Semi-Fredholm Perturbation Theorems

DOI10.2307/2160138zbMath0782.47013OpenAlexW4241474693MaRDI QIDQ4201626

Fernando Galaz-Fontes

Publication date: 1 September 1993

Full work available at URL: https://doi.org/10.2307/2160138

zbMATH Keywords

measures of noncompactnessessential spectral radiusperturbation functionperturbation theorems for upper semi-Fredholm operatorsupper semi- Fredholm radius

Mathematics Subject Classification ID

Contraction-type mappings, nonexpansive mappings, (A)-proper mappings, etc. (47H09) Perturbation theory of linear operators (47A55) (Semi-) Fredholm operators; index theories (47A53)

Related Items (4)

Quantities characterizing semi-Fredholm operators and perturbation radii ⋮ Quantitative characterizations of bounded compact approximation property by semi-Fredholm operators ⋮ Unnamed Item ⋮ Distortion of Banach spaces and supermultiplicative operational quantities

Cites Work

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• On the bounded compact approximation property and measures of noncompactness
• Semigroups of operators and measures of noncompactness
• Geometric characteristic of semi-Fredholm operators and their asymptotic behaviour
• On the Asymptotic Behaviour of Some Quantities Related to Semifredholm Operators
• Best Fredholm perturbation theorems
• Riesz operators and Fredholm perturbations
• The radius of the essential spectrum

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