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GITA\(^{-1}\): A symbolic computing program for an inverse problem of the Birkhoff-Gustavson normal form expansion. (English) Zbl 0960.65136

Summary: We present briefly a symbolic computing program named \(\text{GITA}^{-1}\) working on REDUCE 3.3 or later, which solves an ‘inverse problem’ for the Birkhoff-Gustavson normal form expansion.

MSC:

65P10 Numerical methods for Hamiltonian systems including symplectic integrators
37M15 Discretization methods and integrators (symplectic, variational, geometric, etc.) for dynamical systems
81R12 Groups and algebras in quantum theory and relations with integrable systems
68W30 Symbolic computation and algebraic computation

Software:

GITA; REDUCE
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