Vasil’eva, A. A. Kolmogorov widths of intersections of finite-dimensional balls. (English) Zbl 1507.41011 J. Complexity 72, Article ID 101649, 15 p. (2022). MSC: 41A46 46B20 PDFBibTeX XMLCite \textit{A. A. Vasil'eva}, J. Complexity 72, Article ID 101649, 15 p. (2022; Zbl 1507.41011) Full Text: DOI
Vasil’eva, A. A. Bounds for the Kolmogorov widths of the Sobolev weighted classes with conditions on the zero and highest derivatives. (English) Zbl 1500.46029 Russ. J. Math. Phys. 29, No. 2, 249-279 (2022). MSC: 46E35 41A46 47B06 PDFBibTeX XMLCite \textit{A. A. Vasil'eva}, Russ. J. Math. Phys. 29, No. 2, 249--279 (2022; Zbl 1500.46029) Full Text: DOI
Vasil’eva, A. A. Kolmogorov widths of the intersection of two finite-dimensional balls. (English. Russian original) Zbl 1479.41018 Russ. Math. 65, No. 7, 17-23 (2021); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 7, 23-29 (2021). Reviewer: Yuri A. Farkov (Moskva) MSC: 41A45 46B45 PDFBibTeX XMLCite \textit{A. A. Vasil'eva}, Russ. Math. 65, No. 7, 17--23 (2021; Zbl 1479.41018); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 7, 23--29 (2021) Full Text: DOI arXiv
Dorai, Abderraouf; Chil, Elmiloud; Wójtowicz, Marek Korovkin-type approximation theory in Riesz spaces. (English) Zbl 1491.46005 Mediterr. J. Math. 15, No. 4, Paper No. 169, 1-14 (2018). MSC: 46A40 06F25 41A35 PDFBibTeX XMLCite \textit{A. Dorai} et al., Mediterr. J. Math. 15, No. 4, Paper No. 169, 1--14 (2018; Zbl 1491.46005) Full Text: DOI
Israfilov, Daniyal M.; Testici, Ahmet Approximation problems in the Lebesgue spaces with variable exponent. (English) Zbl 1395.46023 J. Math. Anal. Appl. 459, No. 1, 112-123 (2018). Reviewer: Francisco Pérez Acosta (La Laguna) MSC: 46E30 41A10 PDFBibTeX XMLCite \textit{D. M. Israfilov} and \textit{A. Testici}, J. Math. Anal. Appl. 459, No. 1, 112--123 (2018; Zbl 1395.46023) Full Text: DOI
Wiśniewska, Halina; Wójtowicz, Marek Approximations of the Korovkin type in Banach lattices. (English) Zbl 1312.41032 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 109, No. 1, 125-134 (2015). MSC: 41A36 41A65 46B42 47B65 PDFBibTeX XMLCite \textit{H. Wiśniewska} and \textit{M. Wójtowicz}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 109, No. 1, 125--134 (2015; Zbl 1312.41032) Full Text: DOI