Khuromonov, Kh. M. On the best simultaneous approximation of functions in the Bergman space \(B_2\). (English. Russian original) Zbl 1526.42003 Russ. Math. 67, No. 5, 50-59 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 5, 71-81 (2023). MSC: 42A10 41A10 41A50 42A75 30H05 PDFBibTeX XMLCite \textit{Kh. M. Khuromonov}, Russ. Math. 67, No. 5, 50--59 (2023; Zbl 1526.42003); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 5, 71--81 (2023) Full Text: DOI
Osipenko, Konstantin Yu. Optimal recovery in weighted spaces with homogeneous weights. (English. Russian original) Zbl 1505.41020 Sb. Math. 213, No. 3, 385-411 (2022); translation from Mat. Sb. 213, No. 3, 111-138 (2022). MSC: 41A65 41A46 42B10 PDFBibTeX XMLCite \textit{K. Yu. Osipenko}, Sb. Math. 213, No. 3, 385--411 (2022; Zbl 1505.41020); translation from Mat. Sb. 213, No. 3, 111--138 (2022) Full Text: DOI
Sharapudinov, I. I. Sobolev-orthogonal systems of functions and some of their applications. (English. Russian original) Zbl 1434.42039 Russ. Math. Surv. 74, No. 4, 659-733 (2019); translation from Usp. Mat. Nauk 74, No. 4, 87-164 (2019). MSC: 42C05 33C45 41A25 41A10 PDFBibTeX XMLCite \textit{I. I. Sharapudinov}, Russ. Math. Surv. 74, No. 4, 659--733 (2019; Zbl 1434.42039); translation from Usp. Mat. Nauk 74, No. 4, 87--164 (2019) Full Text: DOI
Romanyuk, A. S. On the problem of linear widths of the classes \(B_{p,\theta}^r\) of periodic functions of many variables. (English. Ukrainian original) Zbl 1309.41014 Ukr. Math. J. 66, No. 7, 1085-1098 (2014); translation from Ukr. Mat. Zh. 66, No. 7, 970-982 (2014). MSC: 41A46 42A10 PDFBibTeX XMLCite \textit{A. S. Romanyuk}, Ukr. Math. J. 66, No. 7, 1085--1098 (2014; Zbl 1309.41014); translation from Ukr. Mat. Zh. 66, No. 7, 970--982 (2014) Full Text: DOI