Perturbations of Fredholm operators
Robert Israel (1974)
Studia Mathematica
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Robert Israel (1974)
Studia Mathematica
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Gleason, Jim (2001)
Georgian Mathematical Journal
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Kim, An-Hyun, Kim, In Hyoun (2006)
Journal of Inequalities and Applications [electronic only]
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M. Berkani, M. Sarih (2001)
Studia Mathematica
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Let X be a Banach space and let T be a bounded linear operator acting on X. Atkinson's well known theorem says that T is a Fredholm operator if and only if its projection in the algebra L(X)/F₀(X) is invertible, where F₀(X) is the ideal of finite rank operators in the algebra L(X) of bounded linear operators acting on X. In the main result of this paper we establish an Atkinson-type theorem for B-Fredholm operators. More precisely we prove that T is a B-Fredholm operator if and only...
Živković, Snežana (1997)
Publications de l'Institut Mathématique. Nouvelle Série
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M. Schechter, Robert Whitley (1988)
Studia Mathematica
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Jaroslav Zemánek (1984)
Studia Mathematica
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Manuel González, Antonio Martinón (1993)
Extracta Mathematicae
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Lutz Weis (1981)
Mathematische Zeitschrift
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