On approximation of two-variable function by linear positive polynomial operators
Abstract
On approximation of two-variable function by linear positive polynomial operators.
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Korovkin P.P. "On order of approximation of functions by linear positive operators", Dokl. AN SSSR, 1957; 114(6): pp. 1158-1161. (in Russian)
Korovkin P.P. "On one asymptotic property of positive methods of summation of Fourier series and on the best approximation of $$$Z_2$$$ class by linear positive polynomial operators", Uspekhi matem. nauk, 1958; 13(6): pp. 99-103. (in Russian)
Morozov E.N. "On convergence of linear positive operators in space of continuous $$$2\pi$$$-periodic functions of two variables", Uchen. zap. Kalinin. gos. ped. in-ta, 1958; 26: pp. 129-142. (in Russian)
Polya G., Szego G. Problems and theorems in analysis, GTTI, 1956; vol. 2. (in Russian)
DOI: https://doi.org/10.15421/246702
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