Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2010-09-26
Nonlinear Sciences
Exactly Solvable and Integrable Systems
This paper is dedicated to Professor T. Bountis on the occasion of his 60th birthday with appreciation of his important contri
Scientific paper
One of the authors has recently introduced the concept of conjugate Hamiltonian systems: the solution of the equation $h=H(p,q,t),$ where $H$ is a given Hamiltonian containing $t$ explicitly, yields the function $t=T(p,q,h)$, which defines a new Hamiltonian system with Hamiltonian $T$ and independent variable $h.$ By employing this construction and by using the fact that the classical Painlev\'e equations are Hamiltonian systems, it is straightforward to associate with each Painlev\'e equation two new integrable ODEs. Here, we investigate the conjugate Painlev\'e II equations. In particular, for these novel integrable ODEs, we present a Lax pair formulation, as well as a class of implicit solutions. We also construct conjugate equations associated with Painlev\'e I and Painlev\'e IV equations.
Fokas Athanassios S.
Yang Deshan
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