Geodesic
On approximation by families of linear polynomial operators in $l_P$-spaces, $0$
Sbornik. Mathematics, Tome 82 (1995) no. 2, pp. 441-459 Cet article a éte moissonné depuis la source Math-Net.Ru

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New applications are given for a method of approximation by families of linear polynomial operators in $L_p$-spaces with $0 that was developed by the author in previous papers. In particular, a direct theorem and an inverse theorem on approximation 'by angle' of trigonometric polynomials are proved in the case of higher-order moduli of smoothness. 
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     title = {On approximation by families of linear polynomial operators in $l_P$-spaces, $0<p<1$},
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     url = {http://geodesic.mathdoc.fr/item/SM_1995_82_2_a11/}
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K. V. Runovskii. On approximation by families of linear polynomial operators in $l_P$-spaces, $0

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