Approximation of ( ψ, β )-differentiable functions defined on the real axis by Weierstrass operators von Kalchuk, I. V., Кальчук, І. В.

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I. Approximative properties of biharmonic Poisson integrals in the classes $W^r_{\beta} H^{\alpha}$ von Kalchuk, I. V., Kharkevych, Yu. I., Кальчук, І. В., Харкевич, Ю. І.

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Approximation of (ψ, β)-differentiable functions by Weierstrass integrals von Kalchuk, I. V., Kharkevych, Yu. I., Кальчук, І. В., Харкевич, Ю. І.

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On the approximation of the classes $W_{β}^rH^{α}$ by biharmonic Poisson integrals von Hrabova, U. Z., Kalchuk, I. V., Stepanyuk, T. A., Грабова, У. З., Кальчук, І. В., Степанюк, Т. А.

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Approximation of functions from the classes $W_{β}^r H^{α }$ by Weierstrass integrals von Hrabova, U. Z., Kalchuk, I. V., Stepanyuk, T. A., Грабова, У. З., Кальчук, І. В., Степанюк, Т. А.

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Asymptotics of the values of approximations in the mean for classes of differentiable functions by using biharmonic Poisson integrals von Kalchuk, I. V., Kharkevych, Yu. I., Кальчук, И. В., Харкевич, Ю. И., Кальчук, И. В., Харкевич, Ю. И.

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