Место издания:Издательство Московского университета Москва
Первая страница:113
Последняя страница:122
Аннотация:The elementary proof of Jackson's theorem on the approximation of continuous periodic functions by trigonometric polynomials was given. The proof was based on the application of linear polynomial operators.As the corollary the elementary proof of asymptotically exact upper bound of Kolmogorov widths of functional compact of Lipschitz functions was given.