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Resumen de Galosian Obhstructions to Integrability of Hamiltonian Systems

Juan José Morales Ruiz, Jean Pierre Ramis

  • An inconvenience of all the known galoisian formulations of Ziglin's non-integrability theory is the Fhchsian condition at the singular points of the variational equations. We avoid this restriction. Moreover we prove that a necessary condition for meromorphic complete integrability (in Liouville sense) is that the identity component of the Galois group of the variational equation (in the complex domain) must be abelian. We test the efficacy of these new approaches on some examples. We will give some non academic applications in two following papers


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