Mathematica routines jetz.nb jetz.m for performing basic jet computations, including prolongations, differential forms, symmetry groups of differential equations, variational derivatives, etc.

See a sample session for examples of symmetry group computations.

Implementation of the algorithm for detemining generating differential invariants in the paper

Olver, P.J., On the structure and generators of differential invariant algebras, preprint, 2023.
pdf

can be found here.

Unfortunately, the documentation is rather sparse. Write to me if you want to know more.

Professor Peter J. Olver

School of Mathematics

University of Minnesota

Minneapolis, MN 55455

USA

e-mail: ` olver@umn.edu`

`
http://www.math.umn.edu/~olver
`