Perturbation of a Fredholm complex by inessential operators.
Gleason, Jim (2001)
Georgian Mathematical Journal
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Displaying similar documents to “Perturbations of Fredholm operators”
Perturbation of a Fredholm complex by inessential operators.
An Atkinson-type theorem for B-Fredholm operators
M. Berkani, M. Sarih (2001)
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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...
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