Teodoro López-Moratalla

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In systems with two degrees of freedom Arnold's theorem is used for studying non linear stability of the origin when the quadratic part of the Hamiltonian is a non definite form. In that case, a previous normalization of the higher orders is needed, which reduces the Hamiltonian to homogeneous polyno-mials in the actions. However, in the case of resonances(More)
Electronic traps in a circularly polarized microwave field and a static Lunisolar perturbations are the most important mechanism delivering major Earth-orbiting objects into the upper atmosphere. Resonant lunisolar effects become the most interesting subject as far as the satellites lifetime is considered. Resonances of the mean motion type are not possible(More)
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