In this paper we study the degree of approximation by superpositions of a sigmoidal function.We mainlyconsider the univariate case.If f is a continuous function
In this paper, Remes algorithm is applied to compute the numerical solution of the best chebyshev approximation from varisolvent family. Feasibility and converg
The characterization of isotropic Besov spaces for in terms of progressive differences of a function on dyadic points is obtained. Moreover, for withan analogou
For a given triangulation Δ of a region R of interest, let S<sub>8</sub><sup>2</sup>(Δ): = {s∈C<sup>2</sup>(R): s|<sub>1</sub>∈P<sub>8</sub>,l∈Δ}be the space