Contact equivalence problem for KDV-type equations
arXiv:1408.5875
Abstract
The Cartan's method of equivalence and moving coframe method has been applied to solve the local equivalence problem for KDV-type equations under the action of a pseudo-group of contact transformations. The structure equations, the sets of differential invariants for symmetry groups and equivalent conditions of these equations are found.
arXiv admin note: text overlap with arXiv:math-ph/0306007 by other authors