Limit relation for various methods of approximation of periodic functions by splines and trigonometric polynomials
An asymptotic relation for linear, best, and best with restrictions, methods of approximation is studied for periodic functions, by subspaces of splines and trigonometric polynomials of fixed dimension. Estimates of deviation between approximations of fixed elements from a normed space by splines and polynomials are obtained.
scientific article; zbMATH DE number 4006904
scientific article