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* Hembars’ka S. B., Fedunyk-Yaremchuk O.V. Approximation characteristics of the Nikol’sky-Besov-type classes of periodic single- and multivariable functions in the B 1,1 space. Journal of Mathematical Sciences (United States), 2021, 259(1), стр. 75–87. (Scopus) | * Hembars’ka S. B., Fedunyk-Yaremchuk O.V. Approximation characteristics of the Nikol’sky-Besov-type classes of periodic single- and multivariable functions in the B 1,1 space. Journal of Mathematical Sciences (United States), 2021, 259(1), стр. 75–87. (Scopus) | ||
* Hembars’ka S. B., Fedunyk-Yaremchuk O.V. Approximation of classes of periodic functions of several variables with given majorant of mixed moduli of continuity. Carpathian Mathematical Publicationsthis, 2021, 13(3), стр. 838–850. (Scopus) | * Hembars’ka S. B., Fedunyk-Yaremchuk O.V. Approximation of classes of periodic functions of several variables with given majorant of mixed moduli of continuity. Carpathian Mathematical Publicationsthis, 2021, 13(3), стр. 838–850. (Scopus) | ||
* S. B. Hembars’ka, P. V. Zaderei Best orthogonal trigonometric approximations of the Nikol'skii – Besov-type classes of periodic functions in the space B∞,1 . Ukrains’kyi Matematychnyi Zhurnal, 2022, V. 74, N 6, P. 772–783. (Scopus, Web of Science) | * S. B. Hembars’ka, P. V. Zaderei. Best orthogonal trigonometric approximations of the Nikol'skii – Besov-type classes of periodic functions in the space B∞,1 . Ukrains’kyi Matematychnyi Zhurnal, 2022, V. 74, N 6, P. 772–783. (Scopus, Web of Science) | ||
* O.V. Fedunyk-Yaremchuk, S.B. Hembars'ka Best orthogonal trigonometric approximations of the Nikol'skii-Besov-type classes of periodic functions of one and several variables . Carpathian Mathematical Publicationsthis, 2022, 14(1), стр. 171–184. (Scopus) | * O.V. Fedunyk-Yaremchuk, S.B. Hembars'ka. Best orthogonal trigonometric approximations of the Nikol'skii-Besov-type classes of periodic functions of one and several variables . Carpathian Mathematical Publicationsthis, 2022, 14(1), стр. 171–184. (Scopus) |