Abstract
The paper provides the complete characteristics of the class of reflexive strictly convex spaces in which the metric projections on each convex closed set are continuous.
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N. V. Efimov and S. B. Stechkin, “Certain properties of Chebyshev sets,” Dokl. Akad. Nauk SSSR, 118, No. 1, 17–19 (1958).
M. M. Day, Normed Linear Spaces [Russian translation], Moscow (1961),
V. L. Klee, “Convexity of Chebyshev sets,” Math. Ann., 142, No. 3, 292–304 (1961).
Fan Ky and J. Glicksberg, “Some geometric properties of the spheres in a normed linear space,” Duke Math. J.,25, No. 4, 553–568 (1958).
E. V. Oshman, “On the continuity of metric projections in Banach spaces,” Matem. Sb.,80, No. 2, 181–194 (1969).
B. Brosowski, K. H. Hoffman, E. Schäfer, and H. Weber, “Stetigkeitssätze für metrische Projektionen. I. Metrische Projektionen auf lineare Teilräume von Co [Q, H],” Max Planck-Institut,18 (1969).
B. Brosowski, K. H. Hoffman, E. Schäfer, and J. Wener, “Stetigkeitssätze für metrische Projektionen. II. (P)-Raüme und ZS Stetigkeit der metrischen Projektion,” Max Planck-Institut,19 (1969).
B. Brosowski, K. H. Hoffman, E. Schäfer, and H. Weber, “Stetigkeitssätze für metrische Projektionen. III. Eine Fixpunkteigenschaft der metrischen Projektion,” Max Planck-Institut,12 (1969).
B. Brosowski, K. H. Hoffman, E. Schäfer, and H. Weber, “Stetigkeitssätze für metrische Projektionen. IV. Eine hinreichende Bedingung für die φn-Stetigkeit der metrischen Projektion,” Max Planck-Institut,20 (1969).
I. Singer, “Some remarks on approximative compactness,” Rev. Roumaine Math. pures et appl.,9, No. 2, 167–177 (1964).
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Translated from Matematicheskie Zametki, Vol. 10, No. 4, pp. 459–468, October, 1971.
The author wishes to thank S. B. Stechkin for useful comments.
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Oshman, E.V. A continuity criterion for metric projections in banach spaces. Mathematical Notes of the Academy of Sciences of the USSR 10, 697–701 (1971). https://doi.org/10.1007/BF01106468
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DOI: https://doi.org/10.1007/BF01106468