Nonlinear approximation of function spaces of mixed smoothness

2015

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DOI 10.1134/s0037446615020068
Data confidence 70 medium
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Abstract

We study the approximative properties of L q -greedy algorithms with respect to the wellknown system U d of shifts of Dirichlet kernels on the Nikol′skiĭ-Besov classes $SB_{p\theta }^r (\mathbb{T}^d )$ and the Lizorkin-Triebel classes $SF_{p\theta }^r (\mathbb{T}^d )$ of functions of mixed smoothness.