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GITA

swMATH ID: 353
Software Authors: V. Basios, N.A. Chekanov, B.L. Markovski, V.A. Rostovtsev, S.I. Vinitsky
Description: GITA: A REDUCE program for the normalization of polynomial Hamiltonians. For a given polynomial Hamiltonian near an equilibrium point the program GITA calculates analytically the normal Birkhoff-Gustavson form in Cartesian as well as angle-action coordinates and the formal integral of the motion. These quantities are presented in the form of a truncated power series, the highest degree of which determines the degree of the approximation. The program performs the calculation of the modified normal Birkhoff-Gustavson form for the Hamiltonian restricted by the resonance condition. The program package is written in the computer algebra system REDUCE.
Homepage: http://www.cpc.cs.qub.ac.uk/summaries/ADBW_v1_0.html
Programming Languages: Reduce
Operating Systems: DOS 3 VER. 3.0 or higher, MS Windows 3.1.
Dependencies: Computer: IBM PC AT/486MHZ 16Mb, RAM: 2000K words
Keywords: Hamiltonian; Normal birkhoff Gustavson form; Integral of motion; Canonical Transformation; Homogeneous polynomial; Algebraic equation; Reduce
Related Software: REDUCE; LINA01; pchip; UNCMND
Cited in: 8 Publications

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