Polovina, A. I. Approximation of differentiable functions by algebraic polynomials. (English) Zbl 0424.41005 Ukr. Math. J. 30, 314-320 (1978). MSC: 41A10 PDF BibTeX XML Cite \textit{A. I. Polovina}, Ukr. Math. J. 30, 314--320 (1978; Zbl 0424.41005) Full Text: DOI
Polovina, A. I. Approximation differenzierbarer Funktionen vermittels algebraischer Polynome. (Russian) Zbl 0395.41001 Ukr. Mat. Zh. 30, 403-411 (1978). MSC: 41A10 PDF BibTeX XML Cite \textit{A. I. Polovina}, Ukr. Mat. Zh. 30, 403--411 (1978; Zbl 0395.41001)
Kornejchuk, N. P.; Polovina, A. I. On the approximation of continuous functions by algebraic polynomials. (English) Zbl 0255.41004 Ukr. Math. J. 24(1972), 269-278 (1973). MSC: 41A10 PDF BibTeX XML Cite \textit{N. P. Kornejchuk} and \textit{A. I. Polovina}, Ukr. Math. J. 24, 269--278 (1973; Zbl 0255.41004) Full Text: DOI
Kornejchuk, N. P.; Polovina, A. I. Über die Approximation stetiger Funktionen vermittels algebraischer Polynome. (Russian) Zbl 0237.41003 Ukr. Mat. Zh. 24, 328-340 (1972). MSC: 41A10 PDF BibTeX XML Cite \textit{N. P. Kornejchuk} and \textit{A. I. Polovina}, Ukr. Mat. Zh. 24, 328--340 (1972; Zbl 0237.41003)
Kornejchuk, N. P.; Polovina, A. I. Algebraic-polynomial approximation of functions satisfying a Lipschitz condition. (English) Zbl 0226.41002 Math. Notes 9, 254-257 (1971). MSC: 41A10 41A15 41A25 PDF BibTeX XML Cite \textit{N. P. Kornejchuk} and \textit{A. I. Polovina}, Math. Notes 9, 254--257 (1971; Zbl 0226.41002) Full Text: DOI
Kornejchuk, N. P.; Polovina, A. I. Über die Approximation von Funktionen, die einer Lipschitzbedingung genügen, vermittels algebraischer Polynome. (Russian) Zbl 0216.38902 Mat. Zametki 9, 441-447 (1971). MSC: 41A10 41A15 41A25 PDF BibTeX XML Cite \textit{N. P. Kornejchuk} and \textit{A. I. Polovina}, Mat. Zametki 9, 441--447 (1971; Zbl 0216.38902)