TY - JOUR AU - I. A. Shakirov TI - Approximation of the Lebesgue constant of the Fourier operator by a logarithmic-fractional-rational function JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2023 SP - 75 EP - 85 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2023_11_a5/ LA - ru ID - IVM_2023_11_a5 ER -