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  1. 2023

  2. Some New Fourier and Jackson-Nikol'skii Type Inequalities In Unbounded Orthonormal Systems

    Aki̇shev, G., Persson, L. & Si̇ngh, H., 2023, In: Constructive Mathematical Analysis. 4, 3, p. 291-304 14 p.

    Research output: Contribution to journal › Article › peer-review

  3. 2022

  4. ON ESTIMATES OF M-TERM APPROXIMATIONS ON CLASSES OF FUNCTIONS WITH BOUNDED MIXED DERIVATIVE IN THE LORENTZ SPACE

    Akishev, G. & Myrzagaliyeva, A., 1 Oct 2022, In: Journal of Mathematical Sciences. 266, 6, p. 870-885 16 p.

    Research output: Contribution to journal › Article › peer-review

  5. О наилучших M-членных приближениях функций класса Никольского - Бесова в пространстве Лоренца

    Акишев, Г., 2022, In: Труды института математики и механики УрО РАН. 28, 1, p. 7-26 20 p.

    Research output: Contribution to journal › Article › peer-review

  6. ОБ ОЦЕНКАХ ЛИНЕЙНЫХ ПОПЕРЕЧНИКОВ КЛАССОВ ФУНКЦИЙ МНОГИХ ПЕРЕМЕННЫХ В ПРОСТРАНСТВЕ ЛОРЕНЦА

    Акишев, Г., 2022, In: Труды института математики и механики УрО РАН. 28, 4, p. 23-39 16 p.

    Research output: Contribution to journal › Article › peer-review

  7. 2021

  8. Estimates of the best approximations of the functions of the Nikol’skii–Besov class in the generalized space of Lorentz

    Akishev, G., 1 Jan 2021, In: Advances in Operator Theory. 6, 1, 36 p., 15.

    Research output: Contribution to journal › Article › peer-review

  9. Inequalities for the Fourier coefficients in unbounded orthogonal systems in generalized Lorentz spaces

    Akishev, G., Persson, L. E. & Singh, H., 2021, In: Nonlinear Studies. 27, 4, p. 1137-1155 19 p.

    Research output: Contribution to journal › Article › peer-review

  10. 2020

  11. Estimates of best approximations of functions with logarithmic smoothness in the lorentz space with anisotropic norm

    Akishev, G., 1 Jan 2020, In: Ural Mathematical Journal. 6, 1, p. 16-29 14 p.

    Research output: Contribution to journal › Article › peer-review

  12. Some new Fourier inequalities for unbounded orthogonal systems in Lorentz–Zygmund spaces

    Akishev, G., Lukkassen, D. & Persson, L. E., 1 Jan 2020, In: Journal of Inequalities and Applications. 2020, 1, 12 p., 77.

    Research output: Contribution to journal › Article › peer-review

  13. ОЦЕНКИ НАИЛУЧШИХ ПРИБЛИЖЕНИЙ ФУНКЦИЙ КЛАССА НИКОЛЬСКОГО - БЕСОВА В ПРОСТРАНСТВЕ ЛОРЕНЦА ТРИГОНОМЕТРИЧЕСКИМИ ПОЛИНОМАМИ

    Акишев, Г., 2020, In: Труды института математики и механики УрО РАН. 26, 2, p. 5-27 23 p.

    Research output: Contribution to journal › Article › peer-review

  14. 2019

  15. Some Fourier inequalities for orthogonal systems in Lorentz–Zygmund spaces

    Akishev, G., Persson, L. E. & Seger, A., 13 Jun 2019, In: Journal of Inequalities and Applications. 2019, 18 p., 171.

    Research output: Contribution to journal › Article › peer-review

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