scientific article; zbMATH DE number 3424541
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zbMath0269.41029MaRDI QIDQ5686440
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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) Multidimensional problems (41A63) Approximation by operators (in particular, by integral operators) (41A35)
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