Petrov I M

Publications in Math-Net.Ru

1. Approximation of a class of functions of several variables by certain polynomial operators
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1976, no. 1,  3–9
2. Approximation of a class of functions of several variables by certain polynomial operators
   
   Mat. Zametki, 20:5 (1976),  775–780
3. On best approximation of functions of class $Z_{2k}$ by certain linear polynomial operators
   
   Mat. Sb. (N.S.), 67(109):4 (1965),  528–534
4. On the order of approximation of functions of class $Z_1$ by positive linear polynomial operators
   
   Uspekhi Mat. Nauk, 19:2(116) (1964),  151–154
5. The order of approximation of functions of class $Z\alpha$ by certain polynomial operators
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1960, no. 1,  188–193
6. Order of approximation of functions of class $Z$ by certain polynomial operators
   
   Uspekhi Mat. Nauk, 13:6(84) (1958),  127–131