Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] aabs_v1_0.gz(3 Kbytes)
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.

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.