Some results of ۲\pi-periodic functions by Fourier sums in the space L_p(۲\pi)

In this paper, using the Steklov function, we introduce the generalized continuity modulus and define the class of functions W_{\rho,\varphi}^{r,k}  in the space L_p. For this class, we prove an analog of the estimates in [۱] in the space L_p.

کلیدواژه ها:

۲pi-periodic function ، approximation by Fourier sums ، Steklov function