K-functionals and extreme problems of the theory of approximation of the classes of analytic functions in a circle. II von S. B. Vakarchuk, M. B. Vakarchuk

Volltext

On the estimates of the values of various widths of classes of functions of two variables in the weight space L2,г(R2), г=exp(−x2 − y2) von S. B. Vakarchuk, M. B. Vakarchuk

Volltext

On total moduli of continuity for 2periodic functions of two variables in the space L_(2,2) von S. B. Vakarchuk, M. B. Vakarchuk

Volltext

Best approximation by "angles" of analytic in the unit bidisk functions von S. B. Vakarchuk, M. B. Vakarchuk

Volltext

K-functionals and extreme problems of the theory of approximation for classes of analytic functions in the circle. I von S. B. Vakarchuk, M. B. Vakarchuk

Volltext

On the estimates of widths of the classes of functions defined by the generalized moduli of continuity and majorants in the weighted space L2x(0,1) von S. B. Vakarchuk

Volltext

Generalized characteristics of smoothness and some extreme problems of the approximation theory of functions in the space L2 (R). I von S. B. Vakarchuk

Volltext

Generalized characteristics of smoothness and some extreme problems of the approximation theory of functions in the space L2(R). II von S. B. Vakarchuk

Volltext

On the moduli of continuity and fractional-order derivatives in the problems of best mean-square approximations by entire functions of the exponential type on the entire real axis von S. B. Vakarchuk

Volltext

Widths of some classes of functions defined by the generalized moduli of continuity _in the space L_2 von S. B. Vakarchuk

Volltext

On estimates of diameter values of classes of functions in the weight space L2,γ(R2), γ = exp(−x2 − y2) von S. B. Vakarchuk

Volltext

Exact constants in Jackson-type inequalities for the best mean square approximation in L_2(R) and exact values of mean nu-widths of the classes of functions von S. B. Vakarchuk

Volltext

Jackson-type inequalities with generalized modulus of continuity and exact values of the n-widths of the classes of (ψ,β)-differential functions in L2. I von S. B. Vakarchuk

Volltext

Jackson-type inequalities with generalized modulus of continuity and exact values of the n-widths of the classes of (ψ,β)-differentiable functions in L2. II von S. B. Vakarchuk

Volltext

Jackson-Type Inequalities for the Special Moduli of Continuity on the Entire Real Axis and the Exact Values of Mean ν-Widths for the Classes of Functions in the Space L2 (R) von S. B. Vakarchuk

Volltext

Widths of classes of functions in the weight space L2,г(R),г=exp(−x2) von S. B. Vakarchuk

Volltext

On the Best Polynomial Approximations of Entire Transcendental Functions of Many Complex Variables in Some Banach Spaces von S. B. Vakarchuk, S. I. Zhir

Volltext

On the best approximation by "angles" in the mean on the plane R2 with the Chebyshev-Hermite weight von S. B. Vakarchuk, A. V. Shvachko

Volltext

On the Best Approximation in the Mean by Algebraic Polynomials with Weight and the Exact Values of Widths for the Classes of Functions von S. B. Vakarchuk, A. V. Shvachko

Volltext

On the approximation in the mean with the Chebyshev-Hermite weight by algebraic polynomials on the real axis von S. B. Vakarchuk, A. V. Shvachko

Volltext