The alternative Dunford-Pettis property in -algebras and von Neumann preduals |
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Authors: | Leslie J. Bunce Antonio M. Peralta |
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Affiliation: | Department of Mathematics, University of Reading, Reading RG6 2AX, Great Britain ; Departamento de Análisis Matemático, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain |
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Abstract: | A Banach space is said to have the alternative Dunford-Pettis property if, whenever a sequence weakly in with , we have for each weakly null sequence in X. We show that a -algebra has the alternative Dunford-Pettis property if and only if every one of its irreducible representations is finite dimensional so that, for -algebras, the alternative and the usual Dunford-Pettis properties coincide as was conjectured by Freedman. We further show that the predual of a von Neumann algebra has the alternative Dunford-Pettis property if and only if the von Neumann algebra is of type I. |
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