Vol. 23 No. 1 (2020)

Articles

• The method of discretization of fractional order linear systems of ordinary differential equations with constant coefficients

  Fikret A. Aliev, Nihan Alipanah o. Aliev, Naila I. Velieva, K. G. Gasimova

  3-10

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• On the exponential stability of neutral linear systems with variable delays

  Yener Altun, Cemil Tunç

  11-25

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• Functions with isolated critical points on the boundary of a nonoriented surface

  Bohdana Ivanivna Hladysh

  26-37

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• Evolutionary pseudodifferential equations in spaces of generalized periodic functions

  Vasiliy V. Gorodetsky, Olha Vasylivna Martynyuk

  38-57

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• A nonlinear mathematical model describing the competition and coexistence of different language speakers

  Vasyl V. Davydovych, Roman M. Cherniha

  58-68

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• Analysis of equilibrium positions of a system that describes the interaction of viruses and the immune system

  Alexander O. Ignatiev

  69-76

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• Limit states of multicomponent discrete dynamical systems

  Oksana Romanivna Satur

  77-89

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• Necessary and sufficient conditions for the invertibility of piecewise autonomous difference operators in the space of bounded two-sided sequences

  V. Yu. Slyusarchuk

  90-111

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• Equations whose sets of solutions are invariant under a group of mappings isomorphic to a one-parameter rotation group

  V. Yu. Slyusarchuk

  112-123

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• Computer turbulence as a tunnelling effect

  Oleksandr Mykolayovich Sharkovsky, Elena Yu. Romanenko, Abdyvali A. Akbergenov

  124-133

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• Autonomous Noetherian boundary-value problem in the case of parametric resonance

  Sergiy M. Chuiko, Olga V. Nesmelova (Starkova), Oleksiy S. Chuiko

  134-144

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