Geodesic
Estimates of approximations of functions by trigonometric polynomials in spaces with an asymmetric norm and sign-sensitive weight
Čebyševskij sbornik, Tome 25 (2024) no. 3, pp. 177-186 Cet article a éte moissonné depuis la source Math-Net.Ru

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In approximation theory, the problems of finding an estimate of the best approximation through the structural properties of the approximated function are well known. The work is devoted to such problems in spaces with an asymmetric norm and sign-sensitive weights.
Keywords: asymmetric norm, sign-sensitive weight, Jackson—Stechkin theorems, modulus of continuity, modulus of smoothness, best approximation. 
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     author = {A. I. Kozko},
     title = {Estimates of approximations of functions by trigonometric polynomials in spaces with an asymmetric norm and sign-sensitive weight},
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A. I. Kozko. Estimates of approximations of functions by trigonometric polynomials in spaces with an asymmetric norm and sign-sensitive weight. Čebyševskij sbornik, Tome 25 (2024) no. 3, pp. 177-186. http://geodesic.mathdoc.fr/item/CHEB_2024_25_3_a10/