Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-22T12:12:58.647Z Has data issue: false hasContentIssue false

Right and Left Weak Approximation Properties in Banach Spaces

Published online by Cambridge University Press:  20 November 2018

Changsun Choi
Affiliation:
Division of Applied Mathematics, KAIST, Daejeon 305-701, Korea e-mail: cschoi@kaist.ac.krnorthstar21@hanmail.net
Ju Myung Kim
Affiliation:
Division of Applied Mathematics, KAIST, Daejeon 305-701, Korea e-mail: cschoi@kaist.ac.krnorthstar21@hanmail.net
Keun Young Lee
Affiliation:
National Institute for Mathematical Sciences, Yuseong-gu, Daejeon 305-340, Korea e-mail: kjm21@nims.re.kr
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

New necessary and sufficient conditions are established for Banach spaces to have the approximation property; these conditions are easier to check than the known ones. A shorter proof of a result of Grothendieck is presented, and some properties of a weak version of the approximation property are addressed.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2009

References

[1] Casazza, P. G., Approximation Properties. In: Handbook of the geometry of Banach spaces, Vol. 1, North-Holland, Amsterdam, 2001, pp. 271316.Google Scholar
[2] Choi, C. and Kim, J. M.,Weak and quasi approximation properties in Banach spaces. J. Math. Anal. Appl. 316(2006), no. 2, 722735.Google Scholar
[3] Diestel, J., Sequences and series in Banach spaces. Graduate Texts in Mathematics 92, Springer-Verlag, New York, 1984.Google Scholar
[4] Feder, M. and Saphar, P., Spaces of compact operators and their dual spaces. Israel J. Math. 21(1975), no. 1, 3849.Google Scholar
[5] Figiel, T., Factorization of compact operators and applications to the approximation problem. Studia Math. 45(1973), 191210.Google Scholar
[6] Grothendieck, A., Produits tensoriels topologiques et espaces nucléaires, Mem. Amer. Math. Soc. 16(1955), no. 16.Google Scholar
[7] Kim, J. M., Dual problems for weak and quasi approximation properties. J. Math. Anal. Appl. 321(2006), 569575.Google Scholar
[8] Kim, J. M., On relations between weak approximation properties and their inheritances to subspaces. J. Math. Anal. Appl. 324(2006), no. 1, 721727.Google Scholar
[9] Kim, J. M., Compact adjoint operators and approximation properties. J. Math. Anal. Appl. 327(2007), 257268.Google Scholar
[10] Lindenstrauss, J., On nonseparable reflexive Banach spaces. Bull. Amer. Math. Soc. 72(1966), 967970.Google Scholar
[11] Lindenstrauss, J. and Tzafriri, L., Classical Banach Spaces. I. Sequence spaces. Ergebnisse der Mathematik und ihrer Grenzgebiete 92, Springer-Verlag, Berlin, 1977.Google Scholar
[12] Megginson, R. E., An Introduction to Banach space theory. Graduate Texts in Mathematics 183, Springer-Verlag, New York, 1998.Google Scholar
[13] Oja, E. and Pelander, A., The approximation property in terms of the approximability of weak*-weak continuous operators. J. Math. Anal. Appl. 286(2003), no. 2, 713723.Google Scholar