U. Z. Grabova

collaborators

2 papers

math.CA2014

Approximation of classes of convolutions of periodic functions by Zygmund sums in integral metrics

U. Z. Grabova

We obtain estimates exact in order for deviations of Zygmund sums in metrics of spaces $L_{q}$ , $1 < q < \infty$ , on classes of $2 π$ -periodic functions, that admit the representation i…

math.CA2013

Order estimation of the best approximations and of the approximations by Fourier sums of classes of $(ψ, β)$ --diferentiable functions

A. S. Serdyuk, U. Z. Grabova

There were established the exact-order estimations of the best uniform approximations byψ the trigonometrical polynoms on the $C_{β, p}^{ψ}$ classes of $2 π$ -periodic continuous functi…

Approximation of classes of convolutions of periodic functions by Zygmund sums in integral metrics

Order estimation of the best approximations and of the approximations by Fourier sums of classes of (ψ,β)--diferentiable functions

Order estimation of the best approximations and of the approximations by Fourier sums of classes of $(ψ, β)$ --diferentiable functions