TY - JOUR AU - N. P. Korneichuk TI - The exact constant in D.~Jackson’s theorem on best uniform approximation of continuous periodic functions JO - Doklady Akademii Nauk PY - 1962 SP - 514 EP - 515 VL - 145 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_145_3_a9/ LA - ru ID - DAN_1962_145_3_a9 ER -