Characterizability of best approximations by means of a Kolmogorov criterion

DOI10.1016/0021-9045(78)90064-3zbMath0368.41030OpenAlexW2039235172MaRDI QIDQ1243068

F. Poleunis, H. van de Vel

Publication date: 1978

Published in: Journal of Approximation Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0021-9045(78)90064-3

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65)

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Cites Work

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• The construction of self-adjoint operators of Hill with periodic eigenfunctions
• Solid spaces and absolute retracts
• Some theorems on absolute neighborhood retracts
• An extension of Tietze's theorem
• Retraction and extension of mappings of metric and nonmetric spaces
• On a theorem of Hanner
• Mapping Theorems for Non-Compact Spaces

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