Estimates for the approximate characteristics of the classes \(B_{p,\Theta}^{\Omega}\) of periodic functions of two variables with given majorant of mixed moduli of continuity
Bilateral estimates are given for the orthoprojective widths and certain related widths on Besov type spaces for periodic functions of two variables. These estimates are of power-logarithmic form with respect to the dimension of the approximating subspace.
scientific article; zbMATH DE number 6015576
scientific article