Approximation of the classes $$ {W}_{\beta}^r{H}^{\alpha } $$ by three-harmonic Poisson integrals

Asymptotics of approximation of conjugate functions by Poisson integrals

Yu. I. Kharkevych, Kateryna Pozharska · Acta et Commentationes Universitatis Tartuensis de Mathematica · 2019 · 30 citations · Full text

Engineering, Computational Engineering, Probability Theory +6

Complete asymptotics of the approximation of function from the Sobolev classes by the Poisson integrals

Inna Kal’chuk, Yu. I. Kharkevych · Acta et Commentationes Universitatis Tartuensis de Mathematica · 2018 · 30 citations · Full text

Engineering, Mechanical Engineering, Probability Theory +6

On the Approximation of Functions of the Hölder Class by Triharmonic Poisson Integrals

K. M. Zhyhallo, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 2001 · 29 citations

Natural Sciences, Physics, Mathematical Physics +5

Approximation of (ψ, β)-differentiable functions by Weierstrass integrals

Yu. I. Kharkevych, Inna Kal’chuk · Ukrainian Mathematical Journal · 2007 · 26 citations

Natural Sciences, Mathematics, Differential Equations +11

Approximation of conjugate differentiable functions by their Abel–Poisson integrals

K. M. Zhyhallo, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 2009 · 25 citations

Natural Sciences, Mathematics, Differential Equations +9