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Publications by I. V. Kal’chuk

Approximation of (Ψ, Β)-Differentiable Functions by Weierstrass Integrals

Ukrainian Mathematical Journal

English

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Book Review: Approximation of Continuously Differentiable Functions

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On Approximation of Continuously Differentiable Functions by Positive Linear Operators

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On Hypersingular Integrals and Lebesgue Spaces of Differentiable Functions. II

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Weierstrass Approximation Theorem

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Weierstrass Approximation Theorem

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On the Strong Unicity of Best Chebyshev Approximation of Differentiable Functions

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Bernstein Approximation Problem for Differentiable Functions and Quasi-Analytic Weights

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The Weierstrass-Stone Approximation Theorem for P-Adic C^n-Functions

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Ψ-Continuous Functions and Functions Preserving Ψ-Density Points

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