scientific article; zbMATH DE number 3429461
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zbMath0273.41014MaRDI QIDQ5182067
Publication date: 1969
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Approximation by polynomials (41A10) Approximation by other special function classes (41A30) Approximation by arbitrary linear expressions (41A45)
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