Korovkin, P. P. On the order of the approximation of functions by linear positive operators. (English) Zbl 0084.06104 Dokl. Akad. Nauk SSSR 114, 1158-1161 (1957). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 12 Documents Keywords:approximation and series expansion PDFBibTeX XMLCite \textit{P. P. Korovkin}, Dokl. Akad. Nauk SSSR 114, 1158--1161 (1957; Zbl 0084.06104)