TY - JOUR AU - M. O. Akobirshoev AU - M. Sh. Shabozov PY - 2009/06/25 Y2 - 2024/03/28 TI - On exact values of quasiwidths for some classes of differentiable periodic functions of two variables JF - Ukrains’kyi Matematychnyi Zhurnal JA - Ukr. Mat. Zhurn. VL - 61 IS - 6 SE - Research articles DO - UR - https://umj.imath.kiev.ua/index.php/umj/article/view/3063 AB - We determine the exact values of Kolmogorov and linear quasiwidths for some classes of differentiable periodic functions of two variables in the Hilbert space $L_2(Q)$. ER -