Abstract
Given the Hamiltonian H 0 of a completely integrable system, the perturbed problem is described by the Hamiltonian H = H 0 + εHp, where Hp is a function whose numerical value is of the same order of H 0, and ε << 1. The perturbed problem thus differs slightly from the unperturbed one, but unfortunately the same is not true for the solution: a small perturbation can give rise to secular effects, i.e., to a slow but progressive wandering from the unperturbed, and known for infinite time, solution.
A torus is a large convex moulding, usually at the base of a column.
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© 2013 Springer Science+Business Media, New York
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Cordani, B. (2013). Perturbation Theory. In: Geography of Order and Chaos in Mechanics. Progress in Mathematical Physics, vol 64. Birkhäuser, New York, NY. https://doi.org/10.1007/978-0-8176-8370-2_3
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DOI: https://doi.org/10.1007/978-0-8176-8370-2_3
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Publisher Name: Birkhäuser, New York, NY
Print ISBN: 978-0-8176-8369-6
Online ISBN: 978-0-8176-8370-2
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