共 6 条
[1]
Bushev D. N.(1990)On the approximation of weakly differentiable periodic function Ukr. Mat. Zh. 42 406-412
[2]
Stepantes A. I.(1993)On the approximation of classes of convolutions Ukr. Mat. Zh. 45 26-31
[3]
Bushev D. N.(1953)On one asymptotic property of summation of Fourier series and the best approximation of functions of the class ℤ Usp. Mat. Nauk 13 99-103
[4]
Koval’chuk I. R.(1985) by linear positive operators Ukr. Mat. Zh. 37 154-162
[5]
Korovkin P. P.(undefined)On the best asymptotic approximation of the classes of differentiable functions by linear positive operators undefined undefined undefined-undefined
[6]
Bushev D. N.(undefined)undefined undefined undefined undefined-undefined