Non-integrability of a self-gravitating riemann liquid ellipsoid
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- Combot, T. Regul. Chaot. Dyn. (2013) 18: 497. doi:10.1134/S1560354713050031
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We consider the motion of a triaxial Riemann ellipsoid of a homogeneous liquid without angular momentum. We prove that it does not admit an additional first integral which is meromorphic in position, impulsions, and elliptic integrals which appear in the potential. This proves that the system is not integrable in the Liouville sense; we actually show that even its restriction to a fixed energy hypersurface is not integrable.