Point Equivalence of Second-Order ODEs: Maximal Invariant Classification Order
Differential Geometry
2014-05-28 v3 Mathematical Physics
Classical Analysis and ODEs
math.MP
Abstract
We show that the local equivalence problem for second-order ordinary differential equations under point transformations is completely characterized by differential invariants of order at most 10 and that this upper bound is sharp. We also show that, modulo Cartan duality and point transformations, the Painlev\'e-I equation can be characterized as the simplest second-order ODE belonging to the class of equations requiring 10th order jets for their classification.
Cite
@article{arxiv.1208.1014,
title = {Point Equivalence of Second-Order ODEs: Maximal Invariant Classification Order},
author = {Robert Milson and Francis Valiquette},
journal= {arXiv preprint arXiv:1208.1014},
year = {2014}
}
Comments
revised introduction, minor correctoins, added mathematica notebook, resubmitting using a tgz archive to give direct access to ancillary file