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Manuscript Title: A REDUCE program for determining point and contact lie symmetries of differential equations.
Authors: V.P. Eliseev, R.N. Fedorova, V.V. Kornyak
Program title: LIE
Catalogue identifier: AABS_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 36(1985)383
Programming language: Reduce.
Computer: IBM 360/370.
Operating system: OS.
RAM: 400K words
Word size: 32
Keywords: General purpose, Differential equations, Lie symmetries, Point transformation, Contact transformation, Reduce.
Classification: 4.3, 5.

Nature of problem:
Point and contact symmetries of differential equations play an important role in mathematical physics. Knowledge of all Lie symmetry transformations gives important information about the given differential equations.

Restrictions:
The available computer memory is the severest restriction. It may be only avoided by splitting the problem into several smaller parts.

Running time:
This depends strongly on the order of differential equations and the number of dependent and independent variables. It cannot be estimated in advance.