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Lagrange stability

(a quality of some stable orbits)

Lagrange stability (of motion) is a criteria for a stability of a trajectory in a dynamical system (e.g., a planet in orbit), consisting of a set of inequalities. Satisfying them sets bounds on the trajectory, i.e., a region within which the orbit will remain.


(orbits,celestial mechanics)
http://www.encyclopediaofmath.org/index.php/Lagrange_stability
http://iopscience.iop.org/1538-3881/117/6/3054/fulltext/980532.text.html
https://arxiv.org/abs/1210.0321

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