ANALYSIS MATHEMATICA, vol.46, no.4, pp.655-665, 2020 (SCI-Expanded)
In this paper, we study the problem of approximation to reconstruct the value of a function of several variables from the approximate values of the Fourier coefficients of a function at a given fixed point. A theorem on the reconstruction of the value of a function with several variables at any given fixed point with a small error is given.