Abstract:
The following classical problems of generalized rational function approximation are studied: existence, uniqueness, and stability, and characterization of best approximants.
Keywords:
existence of best approximation, generalized rational functions, algebraically complete set.
Citation:
A. R. Alimov, I. G. Tsar'kov, “Classical problems of rational approximation”, Dokl. RAN. Math. Inf. Proc. Upr., 506 (2022), 5–8; Dokl. Math., 106:2 (2022), 305–307