Gonchar, A. A. Quasianalytic classes of functions connected with the best approximation by rational functions. (Russian) Zbl 0223.41012 Izv. Akad. Nauk Arm. SSR, Mat. 6, 148-159 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 41A20 Approximation by rational functions 41A50 Best approximation, Chebyshev systems PDFBibTeX XMLCite \textit{A. A. Gonchar}, Izv. Akad. Nauk Arm. SSR, Mat. 6, 148--159 (1971; Zbl 0223.41012)