Estimate for the Order of Orthoprojection Width of the Nikol’skii–Besov Class in the Metric of Anisotropic Lorentz Spaces


Bekmaganbetov K.A. Kervenev K.E. Toleugazy Y.
July 2022Springer

Journal of Mathematical Sciences (United States)
2022#264Issue 5552 - 561 pp.

We obtain a sharp estimate for the order of the orthoprojection width of the Nikol’skii–Besov class with mixed smoothness and mixed metric in the metric of anisotropic Lorentz spaces.



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Kazakhstan Branch of Lomonosov Moscow State University, 11, Kazhymukan St., Nur-Sultan, 010010, Kazakhstan
Institute of Mathematics and Mathematical Modeling MES RK, 125, Pushkina St, Almaty, 050010, Kazakhstan
Karaganda Buketov University, 28, University St., Kereganda, 100024, Kazakhstan

Kazakhstan Branch of Lomonosov Moscow State University
Institute of Mathematics and Mathematical Modeling MES RK
Karaganda Buketov University

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