2005/10/11 by Si-Qi Liu, Youjin Zhang · 1 citation
Physics and Astronomy · #nlin.SI
paper · pdf · doi:10.1016/j.geomphys.2006.02.005
23 pages
arxiv created 2005/10/11 · arxiv updated 2009/12/01
For certain class of perturbations of the equation ut=f(u) ux, we prove the existence of change of coordinates, called quasi-Miura transformations, that reduce these perturbed equations to the unperturbed ones. As an application, we propose a criterion for the integrability of these equations.