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Modified method of simplest equation for obtaining exact analytical solutions of nonlinear partial differential equations: further development of the methodology with applications

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  • Vitanov, Nikolay K.
  • Dimitrova, Zlatinka I.
  • Vitanov, Kaloyan N.

Abstract

We discuss the application of a variant of the method of simplest equation for obtaining exact traveling wave solutions of a class of nonlinear partial differential equations containing polynomial nonlinearities. As simplest equation we use differential equation for a special function that contains as particular cases trigonometric and hyperbolic functions as well as the elliptic function of Weierstrass and Jacobi. We show that for this case the studied class of nonlinear partial differential equations can be reduced to a system of two equations containing polynomials of the unknown functions. This system may be further reduced to a system of nonlinear algebraic equations for the parameters of the solved equation and parameters of the solution. Any nontrivial solution of the last system leads to a traveling wave solution of the solved nonlinear partial differential equation. The methodology is illustrated by obtaining solitary wave solutions for the generalized Korteweg–deVries equation and by obtaining solutions of the higher order Korteweg–deVries equation.

Suggested Citation

  • Vitanov, Nikolay K. & Dimitrova, Zlatinka I. & Vitanov, Kaloyan N., 2015. "Modified method of simplest equation for obtaining exact analytical solutions of nonlinear partial differential equations: further development of the methodology with applications," Applied Mathematics and Computation, Elsevier, vol. 269(C), pages 363-378.
    • Handle: RePEc:eee:apmaco:v:269:y:2015:i:c:p:363-378
    DOI: 10.1016/j.amc.2015.07.060
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    1. Kudryashov, Nikolai A., 2005. "Simplest equation method to look for exact solutions of nonlinear differential equations," Chaos, Solitons & Fractals, Elsevier, vol. 24(5), pages 1217-1231.
    2. Kudryashov, Nikolai A. & Demina, Maria V., 2007. "Polygons of differential equations for finding exact solutions," Chaos, Solitons & Fractals, Elsevier, vol. 33(5), pages 1480-1496.
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    Cited by:

    1. Silambarasan, Rathinavel & Baskonus, Haci Mehmet & Vijay Anand, R. & Dinakaran, M. & Balusamy, Balamurugan & Gao, Wei, 2021. "Longitudinal strain waves propagating in an infinitely long cylindrical rod composed of generally incompressible materials and its Jacobi elliptic function solutions," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 182(C), pages 566-602.
    2. Vitanov, Nikolay K. & Dimitrova, Zlatinka I. & Ivanova, Tsvetelina I., 2017. "On solitary wave solutions of a class of nonlinear partial differential equations based on the function 1/coshn(αx+βt)," Applied Mathematics and Computation, Elsevier, vol. 315(C), pages 372-380.

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