A criterion for the best uniform approximation by simple partial fractions in terms of alternance. (English) Zbl 1323.41017
Izv. Math. 79, No. 3, 431-448 (2015); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 79, No. 3, 3-22 (2015).
Reviewer: Marcel G. de Bruin (Haarlem)