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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/085/05/0807-0821

    • Keywords

       

      Discrete integrable systems; integrable mappings; discretization; integrals of motion; Lax pair.

    • Abstract

       

      Systematic analytic methods of deriving integrable mappings from integrable nonlinear ordinary differential, differential-difference and lattice equations are presented. More specifically, we explain how to derive integrable mappings through four different techniques namely,

      1. dis-cretization technique,

      2. Lax pair approach,

      3. periodic reduction of integrable nonlinear partial difference equations and

      4. construction of sufficient number of integrals of motion.

      The applicability of methods have been illustrated through Ricatti equation, a scalar second-order nonlinear ordinary differential equation with cubic nonlinearity, 2- and 3-coupled second-order nonlinear ordinary differential equations with cubic nonlinearity, lattice equations of Korteweg–de Vries, modified Korteweg–deVries and sine-Gordon types.

    • Author Affiliations

       

      C Uma Maheswari1 R Sahadevan1

      1. Ramanujan Institute for Advanced Study in Mathematics, University of Madras, Chennai 600 005, India
    • Dates

       
  • Pramana – Journal of Physics | News

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