Descripción
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This paper is concerned with the study of a class of closed linear operators densely defined on a Hilbert space H called B-Fredholm operators. We characterize a B-Fredholm operator as the direct sum of a Fredholm closed operator and a bounded nilpotent operator. The notion of index of a B-Fredholm operator is introduced and a characterization of B-Fredholm operators with index cero in terms of the sum of a Drazin closed operator and a finite-rank operator is given. We analyze the properties of the powers of T of a closed B-Fredholm operator and we establish a spectral mapping theorem. | |
Internacional
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Si |
JCR del ISI
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Si |
Título de la revista
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PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY |
ISSN
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0013-0915 |
Factor de impacto JCR
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0,529 |
Información de impacto
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Volumen
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51 |
DOI
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Número de revista
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0 |
Desde la página
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285 |
Hasta la página
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296 |
Mes
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ENERO |
Ranking
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