Оптимальные кубатурные формулы для классов периодических функций многих переменных

2021

Closed access Metadata (CSL-JSON)
DOI 10.4213/tm4153
Data confidence 70 medium
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Abstract

Установлены точные по порядку оценки погрешности оптимальных кубатурных формул для пространств типа Никольского-Бесова $B^{s \mathtt {m}}_{p q}(\mathbb T^m)$ и Лизоркина-Трибеля $L^{s \mathtt {m}}_{p q}(\mathbb T^m)$ для ряда соотношений между параметрами $s$, $p$, $q$, $\mathtt {m}$ ($s=(s_1,…,s_n)\in \mathbb R^n_+$, $1\leq p,q\leq \infty $, $\mathtt {m}=(m_1,…,m_n)\in \mathbb N ^n$, $m=m_1+…+m_n$). Оценки снизу устанавливаются методом Бахвалова. При получении оценок сверху используются кубатурные формулы Фролова.