On the approximation of the classes $W_{β}^rH^{α}$
by biharmonic Poisson integrals
Authors
U. Z. Hrabova
I. V. Kalchuk
T. A. Stepanyuk
Abstract
We obtain asymptotic equalities for the least upper bounds of the deviations of biharmonic Poisson integrals from functions
of the classes $W_{β}^rH^{α}$ in the case where $r > 2, 0 \leq \alpha < 1$.
