On Lagrangians and Hamiltonians of some fourth-order nonlinear Kudryashov ODEs

Partha Guha, A. Ghose Choudhury

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We derive the Lagrangians of the reduced fourth-order ordinary differential equations studied by Kudryashov, when they satisfy the conditions stated by Fels [Fels ME, The inverse problem of the calculus of variations for scalar fourth-order ordinary differential equations. Trans Am Math Soc 1996;348:5007-29] using Jacobi's last multiplier technique. In addition the Hamiltonians of these equations are derived via Jacobi-Ostrogradski's theory. In particular, we compute the Lagrangians and Hamiltonians of fourth-order Kudryashov equations which pass the Painlevé test.

Original languageBritish English
Pages (from-to)3914-3922
Number of pages9
JournalCommunications in Nonlinear Science and Numerical Simulation
Volume16
Issue number10
DOIs
StatePublished - Oct 2011

Keywords

  • Fourth-order ordinary differential equations
  • Inverse problem of calculus of variations
  • Jacobi last multiplier
  • Jacobi-Ostrogradski's method
  • Lagrangian

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