Approximation by de la Vallée-Poussin operators on the classes of functions locally summable on the real axis

• Дата: 2010
• Автори: Rukasov, V. I., Chaichenko, S. O., Рукасов, В. І., Чайченко, С. О.
• Формат: Стаття
• Мова: Українська; Англійська
• Опубліковано: Institute of Mathematics, NAS of Ukraine 2010
• Онлайн доступ: https://umj.imath.kiev.ua/index.php/umj/article/view/2929
• Назва журналу: Ukrains’kyi Matematychnyi Zhurnal

For the least upper bounds of deviations of the de la Vallée-Poussin operators on the classes $\widehat{L}^{\psi}_{\beta}$ of rapidly vanishing functions $ψ$ in the metric of the spaces $\widehat{L}_p,\; 1 ≤ p ≤ ∞$, we establish upper estimates that are exact on some subsets of functions from $\wide...