# Best *M*-Term trigonometric approximations of the classes \( B_{p,\theta }^\Omega \) of periodic functions of many variables

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## Abstract

We obtain exact order estimates for the best *M* -term trigonometric approximations of the classes \( B_{p,\theta }^\Omega \) of periodic functions of many variables in the space *L* _{ q }.

## Keywords

Periodic Function Trigonometric Polynomial Linear Normed Space Approximation Characteristic Orthogonal Series
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