On the Lebesgue Inequality on Classes of \bar{\psi} -Differentiable Functions
2013
We consider the deviations of Fourier sums in the spaces $ {C^{\bar{\psi}}} $
. The estimates of these deviations are expressed via the best approximations of the $ \bar{\psi} $
-derivatives of functions in the Stepanets sense. The sequences $ \bar{\psi} $
= (ψ1, ψ2) are quasiconvex.
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