On the order of the approximation of functions by linear positive operators
Doklady Akademii Nauk, Tome 114 (1957) no. 6, pp. 1158-1161
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@article{DAN_1957_114_6_a5,
author = {P. P. Korovkin},
title = {On the order of the approximation of functions by linear positive operators},
journal = {Doklady Akademii Nauk},
pages = {1158--1161},
year = {1957},
volume = {114},
number = {6},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_6_a5/}
}
P. P. Korovkin. On the order of the approximation of functions by linear positive operators. Doklady Akademii Nauk, Tome 114 (1957) no. 6, pp. 1158-1161. http://geodesic.mathdoc.fr/item/DAN_1957_114_6_a5/