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Manuscript Title: Determination of Lie-Backlund symmetries of differential equations using FORMAC.
Authors: R.N. Fedorova, V.V. Kornyak
Program title: LB
Catalogue identifier: AADL_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 39(1986)93
Programming language: PL/1.
Computer: IBM 360/370.
Operating system: OS.
RAM: 200K words
Word size: 32
Keywords: Particle physics, Elementary, General purpose, Differential equations, Backlund-lie symmetries.
Classification: 4.3.

Nature of problem:
Lie-Backlund symmetries are the wide generalization of point and contact Lie symmetries and essentially extend the applications of the group theoretical methods in mathematical physics.

In most cases the available computer memory is the severest restriction. It may only be avoided if the problem is split into several smaller ones.

Running time:
It depends heavily on the number of dependent and independent variables, the order of equations and the order of determining equations. It cannot be estimated in advance.