TY - JOUR AU - Vitalii V. Arestov TI - Approximation of differentiation operators by bounded linear operators in lebesgue spaces on the axis and related problems in the spaces of $(p,q)$-multipliers and their predual spaces JO - Ural mathematical journal PY - 2023 SP - 4 EP - 27 VL - 9 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UMJ_2023_9_2_a0/ LA - en ID - UMJ_2023_9_2_a0 ER -