Vol. 103 No. 3 (2021)

DOI: https://doi.org/10.31489/2518-7929/2021-103-3
Published: 2021-09-30

Full Issue

MATHEMATICS

  • Partial best approximations and the absolute Cesaro summability of multiple Fourier series

    S. Bitimkhan, D.T. Alibieva
    4-12
    DOI: https://doi.org/10.31489/2021m3/4-12

  • Solving fully fuzzy linear programming problems by controlling the variation range of variables

    S.M. Davoodi, N.A. Abdul Rahman
    13-24
    DOI: https://doi.org/10.31489/2021m3/13-24

  • Central Limit Theorem in View of Subspace Convex-Cyclic Operators

    H.M. Hasan, D.F. Ahmed, M.F. Hama, K.H.F. Jwamer
    25-35
    DOI: https://doi.org/10.31489/2021m3/25-35

  • Cohomology of simple modules for sl3(k) in characteristic 3

    A.A. Ibrayeva, Sh.Sh. Ibraev, G.K. Yeshmurat
    36-43
    DOI: https://doi.org/10.31489/2021m3/36-43

  • On zeros of an entire function coinciding with exponential typequasi-polynomials, associated with a regular third-order differential operator on an interval

    N.S. Imanbaev, Ye. Kurmysh
    44-53
    DOI: https://doi.org/10.31489/2021m3/44-53

  • Upper Estimates of the angle best approximations of generalized Liouville-Weyl derivatives

    A.E. Jetpisbayeva, A.A. Jumabayeva
    54-67
    DOI: https://doi.org/10.31489/2021m3/54-67

  • Unique solvability of boundary value problem for functional differential equations with involution

    K.Zh. Nazarova, K.I. Usmanov
    68-75
    DOI: https://doi.org/10.31489/2021m3/68-75

  • Factorization method for solving nonlocal boundary value problems in Banach space

    I.N. Parasidis, E. Providas
    76-86
    DOI: https://doi.org/10.31489/2021m3/76-86

  • Summation of some infinite series by the methods of Hypergeometric functions and partial fractions

    M.I. Qureshi, J. Majid, A.H. Bhat
    87-95
    DOI: https://doi.org/10.31489/2021m3/87-95

  • Applications of operations on generalized topological spaces

    B. Roy, T. Noiri
    96-104
    DOI: https://doi.org/10.31489/2021m3/96-104

  • Analytical solution of a fractional differential equation in the theory of viscoelastic fluids

    S. Saghali, F.D. Saei, M. Javidi, M.J. Rad
    105-116
    DOI: https://doi.org/10.31489/2021m3/105-116

  • On Discrete Solutions for Elliptic Pseudo-Differential Equations

    O.A. Tarasova, A.V. Vasilyev, V.B. Vasilyev
    117-123
    DOI: https://doi.org/10.31489/2021m3/117-123

  • On atomic and algebraically prime models obtained by closure of definable sets

    A.R. Yeshkeyev, A.K. Issayeva, N.K. Shamatayeva
    124-130
    DOI: https://doi.org/10.31489/2021m3/124-130

  • On the boundedness of the partial sums operator for the Fourier series in the function classes families associated with harmonic intervals

    Gulsim A. Yessenbayeva, G.A. Yessenbayeva, A.T. Kasimov, N.K. Syzdykova
    131-139
    DOI: https://doi.org/10.31489/2021m3/131-139

  • On a Hilfer Type Fractional Differential Equation with Nonlinear Right-Hand Side

    T. K. Yuldashev, B. J. Kadirkulov, A. R. Marakhimov
    140-155
    DOI: https://doi.org/10.31489/2021m3/140-155