Arestov, V. Uniform approximation of differentiation operators by bounded linear operators in the space \(L_r\). (English) Zbl 1474.41035 Anal. Math. 46, No. 3, 425-445 (2020). Reviewer: Maria Alessandra Ragusa (Catania) MSC: 41A35 26D10 41A50 PDF BibTeX XML Cite \textit{V. Arestov}, Anal. Math. 46, No. 3, 425--445 (2020; Zbl 1474.41035) Full Text: DOI OpenURL
Arestov, V. V. Best uniform approximation of the differentiation operator by operators bounded in the space \(L_2\). (English. Russian original) Zbl 1472.41013 Proc. Steklov Inst. Math. 308, Suppl. 1, 9-30 (2020); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 24, No. 4, 34-56 (2018). Reviewer: Vijay Gupta (New Delhi) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{V. V. Arestov}, Proc. Steklov Inst. Math. 308, 9--30 (2020; Zbl 1472.41013); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 24, No. 4, 34--56 (2018) Full Text: DOI OpenURL