Approximation of functions from the class $\hat{C}^{\psi}_{\beta, \infty}$ by Poisson biharmonic operators in the uniform metric
Abstract
We obtain asymptotic equalities for upper bounds of approximations of functions from the class $\hat{C}^{\psi}_{\beta, \infty}$ by the Poisson biharmonic operators in the uniform metric.
English version (Springer): Ukrainian Mathematical Journal 60 (2008), no. 5, pp 769-798.
Citation Example: Kharkevych Yu. I., Zhyhallo T. V. Approximation of functions from the class $\hat{C}^{\psi}_{\beta, \infty}$ by Poisson biharmonic operators in the uniform metric // Ukr. Mat. Zh. - 2008. - 60, № 5. - pp. 669 – 693.
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