Distinguished subsets and complemented copies of C in vector sequence spaces.
Fernando Bombal (1990)
Extracta Mathematicae
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Fernando Bombal (1990)
Extracta Mathematicae
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Giovanni Emmanuele (2004)
Commentationes Mathematicae Universitatis Carolinae
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Using some known lifting theorems we present three-space property type and permanence results; some of them seem to be new, whereas other are improvements of known facts.
Fernando Bombal (1991)
Extracta Mathematicae
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One of the most important methods used in literature to introduce new properties in a Banach space E, consists in establishing some non trivial relationships between different classes of subsets of E. For instance, E is reflexive, or has finite dimension, if and only if every bounded subset is weakly relatively compact or norm relatively compact, respectively. On the other hand, Banach spaces of the type C(K) and Lp(μ) play a vital role in the general...
J. M. F. Castillo, M. Gonzáles (1994)
Acta Universitatis Carolinae. Mathematica et Physica
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Fernando Bombal (1991)
Czechoslovak Mathematical Journal
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Jesús M. Fernández Castillo (1992)
Extracta Mathematicae
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Michael A. Coco (2004)
Studia Mathematica
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We give biorthogonal system characterizations of Banach spaces that fail the Dunford-Pettis property, contain an isomorphic copy of c₀, or fail the hereditary Dunford-Pettis property. We combine this with previous results to show that each infinite-dimensional Banach space has one of three types of biorthogonal systems.