scientific article; zbMATH DE number 3638487
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Publication:4199218
zbMath0411.41012MaRDI QIDQ4199218
Publication date: 1978
Full work available at URL: http://www.numdam.org/item?id=SAF_1977-1978____A12_0
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Best approximation, Chebyshev systems (41A50) Geometry and structure of normed linear spaces (46B20) Contraction-type mappings, nonexpansive mappings, (A)-proper mappings, etc. (47H09) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65)
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