Geodesic
Approximation of functions of class $H^p$, $0$
Sbornik. Mathematics, Tome 34 (1978) no. 4, pp. 527-545 Cet article a éte moissonné depuis la source Math-Net.Ru

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Definitive estimates are established for the approximation by Cesáro means $(C,\alpha)$, depending on the values of $\alpha$ ($-1<\alpha<\infty$), of the Taylor series of a function $f\in H^p$, $0, on the boundary of the disk of convergence. The estimates are given in the metric of $H^p$. Bibliography: 23 titles. 
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È. A. Storozhenko. Approximation of functions of class $H^p$, $0

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