The author obtains sufficient conditions of the finite independence and the commutativity for local as well as non-local homogeneous symmetries of a large class of -dimensional evolution systems.
@article{701699,
title = {On homogeneous symmetries for evolution systems with constraints},
booktitle = {Proceedings of the 21st Winter School "Geometry and Physics"},
series = {GDML\_Books},
publisher = {Circolo Matematico di Palermo},
address = {Palermo},
year = {2002},
pages = {[219]-231},
mrnumber = {MR1972437},
zbl = {1016.58023},
url = {http://dml.mathdoc.fr/item/701699}
}
Sergyeyev, Artur. On homogeneous symmetries for evolution systems with constraints, dans Proceedings of the 21st Winter School "Geometry and Physics", GDML_Books, (2002), pp. [219]-231. http://gdmltest.u-ga.fr/item/701699/