Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-26T16:40:00.279Z Has data issue: false hasContentIssue false

Mazur Intersection Properties for Compact and Weakly Compact Convex Sets

Published online by Cambridge University Press:  20 November 2018

Jon Vanderwerff*
Affiliation:
Department of Mathematics Walla Walla College College Place, Washington 99324 U.S.A.
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.

Various authors have studied when a Banach space can be renormed so that every weakly compact convex, or less restrictively every compact convex set is an intersection of balls. We first observe that each Banach space can be renormed so that every weakly compact convex set is an intersection of balls, and then we introduce and study properties that are slightly stronger than the preceding two properties respectively.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1998

References

1. Borwein, J. and Fabian, M., On convex functions having points of Gateaux differentiability which are not points of Fréchet differentiability. Canad. J. Math. 45 (1993), 11211134.Google Scholar
2. Borwein, J. and Fitzpatrick, S., A weak Hadamard smooth renorming of L1(Ω, ñ). Canad. Math. Bull. 36 (1993), 407413.Google Scholar
3. Deville, R., Godefroy, G. and Zizler, V., Smoothness and Renormings in Banach Spaces. PitmanMonographs and Surveys in Pure and Applied Math. 64, Longman, 1993.Google Scholar
4. Giles, J. R., Gregory, D. A. and Sims, B., Characterisation of normed linear spaces withMazur's intersection property. Bull. Austral. Math. Soc. 18 (1978), 105123.Google Scholar
5. Sevilla, M. Jiménez and Moreno, J. P., Renorming Banach spaces with the Mazur intersection property. J. Funct. Anal. 144 (1997), 486504.Google Scholar
6. Mazur, S., Uber schwach konvergenz in der raumen (Lp). Studia Math. 4 (1933), 128133.Google Scholar
7. Phelps, R. R., A representation theorem for bounded convex sets. Proc. Amer. Math. Soc. 11(1960), 976983.Google Scholar
8. Pličko, A. N., Some properties of the Johnson-Lindenstrauss space. Functional Anal. Appl. 15 (1981), 8889.Google Scholar
9. Pličko, A. N., Bases and complements in nonseparable Banach spaces. SiberianMath. J. 25 (1984), 636641.Google Scholar
10. Sersouri, A., The Mazur property for compact sets. Pacific J. Math. 133 (1988), 185195.Google Scholar
11. Sersouri, A., Mazur's intersection property for finite dimensional sets. Math. Ann. 283 (1989), 165170.Google Scholar
12. Singer, I., Basis in Banach Spaces. Vol 2, Springer-Verlag, Berlin, Heidelberg, New York, 1981.Google Scholar
13. Whitfield, J. and Zizler, V., Mazur's intersection property of balls for compact convex sets. Bull. Austral. Math. Soc. 35 (1987), 267274.Google Scholar
14. Zizler, V., Renorming concerning Mazur's intersection property of balls for weakly compact convex sets. Math. Ann. 276 (1986), 6166.Google Scholar