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Yu. I. Kharkevych

Observed names: Kharkevych, Yurii, Yu. I. Kharkevich, Yu. Kharkevych, Yu.I. Kharkevych, Yurii I. Kharkevych, Yurii Kharkevych, Yuriy I. Kharkevych, Yuriy Kharkevych
ORCID: 0000-0002-8577-5096
Observed ORCID: 0000-0002-8577-5096
OpenAlex ID: A5068887429
Approximation properties of Abel-Poisson integrals on the classes of differentiable functions, defined by means of modulus of continuity
2023 · T.A. Stepaniuk, Yu.I. Kharkevych · Carpathian Mathematical Publications · 50
Isometry of the Subspaces of Solutions of Systems of Differential Equations to the Spaces of Real Functions
2019 · F. G. Abdullayev, D. M. Bushev, et al. · Ukrainian Mathematical Journal · 45
Approximation Theory and Related Applications
2022 · Yurii Kharkevych · Axioms · 43
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Finding Solution Subspaces of the Laplace and Heat Equations Isometric to Spaces of Real Functions, and Some of Their Applications
2018 · D. N. Bushev, Yu. I. Kharkevich · Mathematical Notes · 42
On approximation of functions from the class $L^{\psi}_{\beta, 1}$ by the Abel-Poisson integrals in the integral metric
2022 · T.V. Zhyhallo, Yu.I. Kharkevych · Carpathian Mathematical Publications · 41
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Asymptotics of approximation of functions by conjugate Poisson integrals
2020 · I.V. Kal'chuk, Yu.I. Kharkevych, et al. · Carpathian Mathematical Publications · 41
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Fourier Transform of the Summatory Abel–Poisson Function
2022 · T. V. Zhyhallo, Yu. I. Kharkevych · Cybernetics and Systems Analysis · 40
On Some Asymptotic Properties of Solutions to Biharmonic Equations
2022 · Yu. I. Kharkevych · Cybernetics and Systems Analysis · 38
Some Asymptotic Properties of the Solutions of Laplace Equations in a Unit Disk
2023 · T. V. Zhyhallo, Yu. I. Kharkevych · Cybernetics and Systems Analysis · 37
Exact Values of the Approximations of Differentiable Functions by Poisson-Type Integrals
2023 · Yu. I. Kharkevych · Cybernetics and Systems Analysis · 37
On the Asymptotics of Some Weierstrass Functions
2015 · J. Zając, M. E. Korenkov, et al. · Ukrainian Mathematical Journal · 37
Approximation of the Classes $$ {W}_{\beta, \infty}^R $$ by Generalized Abel–Poisson Integrals
2022 · I. V. Kal’chuk, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 36
Approximation Properties of the Generalized Abel-Poisson Integrals on the Weyl-Nagy Classes
2022 · Inna Kal’chuk, Yurii Kharkevych · Axioms · 36
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Conditions of Convergence Almost Everywhere for the Convolution of a Function with Delta-Shaped Kernel to this Function
2016 · D. M. Bushev, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 34
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Asymptotic Expansions of Upper Bounds of Deviations of Functions of Class Wr from Their Generalized Poisson Integrals
2018 · Yuriy I. Kharkevych · Journal of Automation and Information Sciences · 33
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Asymptotic Properties of the Solutions of Higher-Order Differential Equations on Generalized Hölder Classes
2023 · Yu. I. Kharkevych, O. G. Khanin · Cybernetics and Systems Analysis · 32
Approximation of the Classes $$ {C}_{\beta}^{\psi } $$H𝛼 By Biharmonic Poisson Integrals
2020 · F. G. Abdullayev, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 32
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Asymptotics of approximation of conjugate functions by Poisson integrals
2019 · Yu. I. Kharkevych, K. V. Pozharska · Acta et Commentationes Universitatis Tartuensis de Mathematica · 31
Approximative Properties of the Generalized Poissin Integrals on the Classes of Functions Determined by a Modulus of Continuity
2019 · Yuriy I. Kharkevych · Journal of Automation and Information Sciences · 31
On some approximate properties of biharmonic Poisson integrals in the integral metric
2024 · Yu.I. Kharkevych, K.M. Zhyhallo · Carpathian Mathematical Publications · 30
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Complete asymptotics of the approximation of function from the Sobolev classes by the Poisson integrals
2018 · I. V. Kal'chuk, Yu. I. Kharkevych · Acta et Commentationes Universitatis Tartuensis de Mathematica · 30
On Approximation of the Quasi-Smooth Functions by Their Poisson Type Integrals
2017 · Yuriy I. Kharkevych · Journal of Automation and Information Sciences · 30
On the Approximation of Functions of the Hölder Class by Triharmonic Poisson Integrals
2001 · K. M. Zhyhallo, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 29
Approximation of (ψ, β)-differentiable functions by Weierstrass integrals
2007 · Yu. I. Kharkevych, I. V. Kal’chuk · Ukrainian Mathematical Journal · 28
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Approximation of conjugate differentiable functions by their Abel–Poisson integrals
2009 · K. M. Zhyhallo, Yu. I. Kharkevych · Ukrainian Mathematical Journal · 25
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Works count: 73
Citation count: 1,378
H-index: 25
I10-index: 45
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