Kyungpook Mathematical Journal

Department of Mathematics, Kyungpook National University (경북대학교 자연과학대학 수학과)
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On the Variational Approach for Analyzing the Stability of Solutions of Evolution Equations

  • Abdel-Gawad, Hamdy I. (Department of Mathematics, Faculty of Science, Cairo University) ;
  • Osman, M.S. (Department of Mathematics, Faculty of Science, Cairo University)
  • Received : 2012.04.04
  • Accepted : 2012.08.30
  • Published : 2013.12.23
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Abstract

The eigenvalue problems arise in the analysis of stability of traveling waves or rest state solutions are currently dealt with, using the Evans function method. In the literature, it had been shown that, use of this method is not straightforward even in very simple examples. Here an extended "variational" method to solve the eigenvalue problem for the higher order dierential equations is suggested. The extended method is matched to the well known variational iteration method. The criteria for validity of the eigenfunctions and eigenvalues obtained is presented. Attention is focused to find eigenvalue and eigenfunction solutions of the Kuramoto-Slivashinsky and (K[p,q]) equation.

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