arXiv · solv-int/9304003
Integrable four-dimensional symplectic maps of standard type
Abstract
We search for rational, four-dimensional maps of standard type (x_{n+1} - 2x_n + x_{n-1} = eps f(x,eps)) possessing one or two polynomial integrals. There are no non-trivial maps corresponding to cubic oscillators, but we find a four-parameter family of such maps corresponding to quartic oscillators. This seems to be the only such example.
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Robert I. McLachlan. 1993-04-28. Integrable four-dimensional symplectic maps of standard type. https://doi.org/10.1016/0375-9601(93)90027-w
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