On recursion operators
Abstract
We observe that application of a recursion operator of the Burgers equation does not produce the expected symmetries. This is explained by the incorrect assumption that D_{x}^{1}D_{x}=1. We then proceed to give a method to compute the symmetries using the recursion operator as a firstorder approximation.
 Publication:

Physica D Nonlinear Phenomena
 Pub Date:
 February 2001
 DOI:
 10.1016/S01672789(00)001883
 Bibcode:
 2001PhyD..149....1S