Exact Values of Widths of Some Functional Classes in L2 and Minimization of the Constants in Inequalities of Jackson – Stechkin Type
In this paper, it is considered the extremal problem of finding the exact constants in inequalities of Jackson – Stechkin type between the best approximations of periodic differentiable functions f ∈ L (r) 2 [0, 2π] by trigonometric polynomials, and the average values with a positive weight ϕ moduli...
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| Format: | Article |
| Language: | English |
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Yaroslavl State University
2013-10-01
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| Series: | Modelirovanie i Analiz Informacionnyh Sistem |
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| Online Access: | https://www.mais-journal.ru/jour/article/view/177 |