TY - JOUR AU - T. E. Tileubayev TI - Exact constants in Jackson--Stechkin inequality in $L^{2}$ with a power-law weight JO - Trudy Instituta matematiki i mehaniki PY - 2023 SP - 259 EP - 279 VL - 29 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMM_2023_29_1_a19/ LA - en ID - TIMM_2023_29_1_a19 ER -