TY  - JOUR
AU  - Kh. M. Khuromonov
TI  - Exact inequalities between the best polynomial approximations and averaged norms of finite differences in the $B_{2}$ space and widths of some classes of functions
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 2022
SP  - 61
EP  - 70
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_2022_3_a6/
LA  - ru
ID  - IVM_2022_3_a6
ER  -