Zhuk, V. V. Some exact inequalities between the best approximations and moduli of continuity of high orders. (English) Zbl 0373.41022 Math. Notes 21, 153-157 (1977). MSC: 41A50 PDF BibTeX XML Cite \textit{V. V. Zhuk}, Math. Notes 21, 153--157 (1977; Zbl 0373.41022) Full Text: DOI
Zhuk, V. V. Gewisse exakte Ungleichungen zwischen besten Approximationen und Stetigkeitsmoduln höherer Ordnungen. (Russian) Zbl 0362.41014 Mat. Zametki 21, 281-288 (1977). MSC: 41A50 PDF BibTeX XML Cite \textit{V. V. Zhuk}, Mat. Zametki 21, 281--288 (1977; Zbl 0362.41014)