@article{Hembars’ka_Zaderei_2022, title={Best orthogonal trigonometric approximations of the Nikol’skii – Besov-type classes of periodic functions in the space $B_{\infty,1}$}, volume={74}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/7070}, DOI={10.37863/umzh.v74i6.7070}, abstractNote={<p>UDC 517.51<br>Exact order estimates are obtained for the best orthogonal trigonometric approximations of the Nikol’skii-Besov-type classes of periodic functions in one and many variables in the space $B_{\infty,1}.$</p&gt;}, number={6}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Hembars’ka, S. B. and Zaderei , P. V.}, year={2022}, month={Jul.}, pages={772 - 783} }