Asymptotics of the solution of the hyperbolic system with a small parameter

Asymptotics of the solution of the hyperbolic system with a small parameter

Asymptotic study of singularly perturbed differential equations of hyperbolic type has received relatively little attention from researchers. In this paper, the asymptotic solution of the singularly perturbed Cauchy problem for a hyperbolic system is constructed. In addition, the regularization method for singularly perturbed problems of S. A. Lomov is used for the first time for the asymptotic solution of a hyperbolic system. It is shown that this approach greatly simplifies the construction of the asymptotics of the solution for singularly perturbed differential equations of hyperbolic type.

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  • [1]. Su Yu-cheng, “Asymptotics of solutions of some degenerate quasilinear hyperbolic equations of the second order”, Reports of the USSR Academy of Sciences, 138(1), (1961), 63-66.
  • [2]. Trenogii V. A., “On the asymptotics of solutions of quasilinear hyperbolic equations with a hyperbolic boundary layer”, Proceedings of the Moscow Institute of Physics and Technology, 9, (1962), 112-127.
  • [3]. Butuzov V. F., “Angular boundary layer in mixed singularly perturbed problems for hyperbolic equations”, Mathematical Сollection, 104(146), (1977), 460–485.
  • [4]. Butuzov V. F., Nesterov A. V., “On some singularly perturbed problems of hyperbolic type with transition layers”, Differential Equations, 22(10), (1986), 1739–1744.
  • [5]. Valiev M. A., “Asymptotics of the solution of the Cauchy problem for a hyperbolic equation with a parameter”, Proceedings of the Moscow Energy Institute, 142, (1972), 2-12.
  • [6]. Abduvaliev A. O., “Asymptotic expansions of solutions of the Darboux problem for singularly perturbed hyperbolic equations”, Fundamental Mathematics and Applied Informatics, 1(4), (1995), 863–869.
  • [7]. Vasileva A. B., “On the inner transition layer in the solution of a system of partial differential equations of the first order”, Differential Equations, 21, (1985), 1537-1544.
  • [8]. Butuzov V. F., Karashchuk A. F., “On a singularly perturbed system of partial differential equations of the first order”, Mathematical Notes, 57(3), (1995), 338–349.
  • [9]. Butuzov V. F., Karashchuk A. F., “Asymptotics of the solution of a system of partial differential equations of the first order with a small parameter”, Fundamental and Applied Mathematics, 6(3), (2000), 723–738.
  • [10]. Nesterov A. V., Shuliko O. V., “Asymptotics of the solution of a singularly perturbed system of first order partial differential equations with small nonlinearity in the critical case”, Journal of Computational Mathematics and Mathematical Physics, 47(3), (2007), 438–444.
  • [11]. Nesterov A. V., “Asymptotics of the solution of the Cauchy problem for a singularly perturbed system of hyperbolic equations”, Chebyshev collection, 12(3), (2011), 93–105.
  • [12]. Nesterov A.V., “On the asymptotics of the solution of a singularly perturbed system of partial differential equations of the first order with small nonlinearity in the critical case”, Journal of Computational Mathematics and Mathematical Physics, 52(7), (2012), 1267-1276.
  • [13]. Nesterov A. V., Pavlyuk T. V., “On the asymptotics of the solution of a singularly perturbed hyperbolic system of equations with several spatial variables in the critical case”, Journal of Computational Mathematics and Mathematical Physics, 54(3), 2014, 450-462.
  • [14]. Nesterov A. V., “On the structure of the solution of one class of hyperbolic systems with several spatial variables in the far field”, Journal of Computational Mathematics and Mathematical Physics, 56(4), (2016), 639–649.
  • [15]. Lomov S. A., Introduction to the general theory of singular perturbations, Moscow, USSR: Nauka, 1981.
  • [16]. Mizohata S., Theory of partial differential equations, Moscow, USSR: Mir, 1977.