1. A Method for the Discretization of Linear Systems of Ordinary Fractional Differential Equations with Constant Coefficients

   • F. A. Aliev
   • N. A. Aliev
   • K. G. Gasimova

   OriginalPaper 23 July 2021 Pages: 567 - 575

2. On the Exponential Stability of Neutral Linear Systems with Variable Delays

   • Y. Altun
   • C. Tunç

   OriginalPaper 24 July 2021 Pages: 576 - 591

3. Functions with Isolated Critical Points on the Boundary of a Nonoriented Surface

   • B. I. Hladysh

   OriginalPaper 23 July 2021 Pages: 592 - 603

4. Evolutionary Pseudodifferential Equations in the Spaces of Generalized Periodic Functions

   • V. V. Horodets’kyi
   • O. V. Martynyuk

   OriginalPaper 23 July 2021 Pages: 604 - 627

5. On a Nonlinear Mathematical Model for the Description of the Competition and Coexistence of Different-Language Speakers

   • V. V. Davydovych
   • R. M. Cherniha

   OriginalPaper 24 July 2021 Pages: 628 - 639

6. Analysis of Equilibrium Positions for a System that Describes the Interaction of Viruses with the Immune System

   • A. O. Ignat’ev

   OriginalPaper 24 July 2021 Pages: 640 - 647

7. Limit States of Multicomponent Discrete Dynamical Systems

   • O. R. Satur

   OriginalPaper 26 July 2021 Pages: 648 - 662

8. Necessary and Sufficient Conditions for the Invertibility of Piecewise-Autonomous Difference Operators in the Space of Bounded Two-Sided Sequences

   • V. Yu Slyusarchuk

   OriginalPaper 23 July 2021 Pages: 663 - 688

9. Equations Whose Sets of Solutions are Invariant Under a Group of Mappings Isomorphic to a One-Parameter Group of Rotations

   • V. Yu. Slyusarchuk

   OriginalPaper 23 July 2021 Pages: 689 - 702

10. Computer Turbulence as a Tunnelling Effect

    • A. N. Sharkovsky
    • E. Yu. Romanenko
    • A. A. Akbergenov

    OriginalPaper 23 July 2021 Pages: 703 - 712

11. Autonomous Noetherian Boundary-Value Problem in the Case of Parametric Resonance

    • S. M. Chuiko
    • O. V. Nesmelova
    • O. S. Chuiko

    OriginalPaper 23 July 2021 Pages: 713 - 725