Best approximation and strict convexity of metric spaces
Tulsi Dass Narang (1981)
Archivum Mathematicum
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Tulsi Dass Narang (1981)
Archivum Mathematicum
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Narang, T.D. (1986)
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T. D. Narang, Sangeeta (2010)
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T. D. Narang, Shavetambry Tejpal (2008)
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B. Krakus (1972)
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Inese Bula (2005)
Banach Center Publications
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The paper introduces a notion of strictly convex metric space and strictly convex metric space with round balls. These objects generalize the well known concept of strictly convex Banach space. We prove some fixed point theorems in strictly convex metric spaces with round balls.
V. W. Bryant (1970)
Compositio Mathematica
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Narang, T.D. (1992)
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Tadeusz Dobrowolski, Jan van Mill (2006)
Fundamenta Mathematicae
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We characterize the AR property in convex subsets of metric linear spaces in terms of certain near-selections.
Taras Banakh, Ivan Hetman (2011)
Studia Mathematica
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We prove that a closed convex subset C of a complete linear metric space X is polyhedral in its closed linear hull if and only if no infinite subset A ⊂ X∖ C can be hidden behind C in the sense that [x,y]∩ C ≠ ∅ for any distinct x,y ∈ A.
R. Duda (1970)
Fundamenta Mathematicae
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