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Theorems of Jackson type in \(H^ p\), \(0<p<1\). (English) Zbl 0465.42001

MSC:
42A10 Trigonometric approximation
41A17 Inequalities in approximation (Bernstein, Jackson, Nikol’skiń≠-type inequalities)
42B30 \(H^p\)-spaces
41A50 Best approximation, Chebyshev systems
Keywords:
Hardy spaces
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