TY - JOUR T1 - On $M$-Term Approximations of the Nikol'skii-Besov Class in the Lorentz Spaces JO - Analysis in Theory and Applications VL - 3 SP - 267 EP - 286 PY - 2017 DA - 2017/08 SN - 33 DO - http://doi.org/10.4208/ata.2017.v33.n3.7 UR - https://global-sci.org/intro/article_detail/ata/10517.html KW - Lorentz space, Besov's class, approximation. AB -

In this paper, we consider a Lorentz space with a mixed norm of periodic functions of many variables. We obtain the exact estimation of the best $M$-term approximations of Nikol'skii's and Besov's classes in the Lorentz space with the mixed norm.