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Solitary wave solutions for a generalized KdV–mKdV equation with variable coefficients

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  • Triki, Houria
  • Taha, Thiab R.
  • Wazwaz, Abdul-Majid

Abstract

In this work, a generalized time-dependent variable coefficients combined KdV–mKdV (Gardner) equation arising in plasma physics and ocean dynamics is studied. By means of three amplitude ansatz that possess modified forms to those proposed by Wazwaz in 2007, we have obtained the bell type solitary waves, kink type solitary waves, and combined type solitary waves solutions for the considered model. Importantly, the results show that there exist combined solitary wave solutions in inhomogeneous KdV-typed systems, after proving their existence in the nonlinear Schrödinger systems. It should be noted that, the characteristics of the obtained solitary wave solutions have been expressed in terms of the time-dependent coefficients. Moreover, we give the formation conditions of the obtained solutions for the considered KdV–mKdV equation with variable coefficients.

Suggested Citation

  • Triki, Houria & Taha, Thiab R. & Wazwaz, Abdul-Majid, 2010. "Solitary wave solutions for a generalized KdV–mKdV equation with variable coefficients," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 80(9), pages 1867-1873.
    • Handle: RePEc:eee:matcom:v:80:y:2010:i:9:p:1867-1873
    DOI: 10.1016/j.matcom.2010.02.001
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    References listed on IDEAS

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    1. Xu, Li-Ping & Zhang, Jin-Liang, 2007. "Exact solutions to two higher order nonlinear Schrödinger equations," Chaos, Solitons & Fractals, Elsevier, vol. 31(4), pages 937-942.
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