TY - JOUR AU - S. A. Stasyuk PY - 2012/01/25 Y2 - 2024/03/28 TI - Best approximation of periodic functions of several variables from the classes $MB^{\omega}_{p,\theta}$ JF - Ukrains’kyi Matematychnyi Zhurnal JA - Ukr. Mat. Zhurn. VL - 64 IS - 1 SE - Short communications DO - UR - https://umj.imath.kiev.ua/index.php/umj/article/view/2561 AB - We obtain exact-order estimates for the best approximation of periodic functions of several variables from the classes $MB^{\omega}_{p,\theta}$by trigonometric polynomials with the "numbers" of harmonics from graded hyperbolic crosses in the metric of the space $L_q$. ER -