ArticleOriginal scientific textThe problem of complementability for some spaces of vector measures of bounded variation with values in Banach spaces containing copies of
Title
The problem of complementability for some spaces of vector measures of bounded variation with values in Banach spaces containing copies of
Authors 1, 2
Affiliations
- Institute of Mathematics, A. Mickiewicz University, Matejki 48/49, 60-769 Poznań, Poland
- Department of Mathematics, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
Abstract
Let (S, ∑, m) be any atomless finite measure space, and X any Banach space containing a copy of . Then the Bochner space is uncomplemented in ccabv(∑,m;X), the Banach space of all m-continuous vector measures that are of bounded variation and have a relatively compact range; and ccabv(∑,m;X) is uncomplemented in cabv(∑,m;X). It is conjectured that this should generalize to all Banach spaces X without the Radon-Nikodym property.
Keywords
Banach space, isomorphic copy of , spaces of vector measures, Bochner integrable functions, Radon-Nikodym property, uncomplemented subspace
Bibliography
- J. Bourgain, Dunford-Pettis operators on
and the Radon-Nikodym property, Israel J. Math. 37 (1980), 34-47. - S. D. Chatterji, Martingale convergence and the Radon-Nikodym theorem in Banach spaces, Math. Scand. 22 (1968), 21-41.
- J. Diestel, Sequences and Series in Banach Spaces, Graduate Texts in Math. 92, Springer, New York 1984.
- J. Diestel and J. J. Uhl, Jr., Vector Measures, Math. Surveys 15, Amer. Math. Soc., Providence, R.I., 1977.
- P. Domański and L. Drewnowski, Uncomplementability of the spaces of norm continuous functions in some spaces of "weakly" continuous functions, Studia Math. 97 (1991), 245-251.
- L. Drewnowski, Un théorème sur les opérateurs de
, C. R. Acad. Sci. Paris 281 (1976), 967-969. - L. Drewnowski, Another note on copies of
and in ca(Σ, X), and the equality ca(Σ, X) = cca(Σ, X), preprint, 1990. - L. Drewnowski and G. Emmanuele, On Banach spaces with the Gelfand-Phillips property. II, Rend. Circ. Mat. Palermo (2) 38 (1989), 377-391.
- G. Emmanuele, On complemented copies of
in , 1 ≤ p < ∞, Proc. Amer. Math. Soc. 104 (1988), 785-786. - G. Emmanuele, About the position of
inside , Atti Sem. Mat. Fis. Univ. Modena, to appear. - M. Feder, On the non-existence of a projection onto the space of compact operators, Canad. Math. Bull. 25 (1982), 78-81.
- N. J. Kalton, Spaces of compact operators, Math. Ann. 208 (1974), 267-278.
- J. Lindenstrauss and L. Tzafriri, Classical Banach Spaces I. Sequence Spaces, Springer, New York 1977.
- J. Mendoza, Copies of
in , Proc. Amer. Math. Soc. 109 (1990), 125-127. - H. P. Rosenthal, On relatively disjoint families of measures, with some application to Banach space theory, Studia Math. 37 (1970), 13-36.