Characterizations of tauberian operators and other semigroups
Manuel González Ruiz, Víctor M. Onieva Aleixandre (1988)
Extracta Mathematicae
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Manuel González Ruiz, Víctor M. Onieva Aleixandre (1988)
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Manuel González Ortiz (1989)
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Manuel González Ruiz, Víctor M. Onieva Aleixandre (1988)
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M. González, A. Martínez-Abejón (1993)
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Upper semi-Fredholm operators and tauberian operators in Banach spaces admit the following perturbative characterizations [6], [2]: An operator T: X --> Y is upper semi-Fredholm (tauberian) if and only if for every compact operator K: X --> Y the kernel N(T+K) is finite dimensional (reflexive). In [7] Tacon introduces an intermediate class between upper semi-Fredholm operators and tauberian operators, the supertauberian operators, and he studies this class using non-standard...
Manuel González Ruiz, Víctor M. Onieva Aleixandre (1988)
Extracta Mathematicae
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Manuel González, Antonio Martinón (1990)
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M. González Ortiz (1989)
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Beatriz Hernando (1990)
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