Rigidity of cotangent lifts and integrable systems
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In this article we generalize a theorem by Palais on the rigidity of compact group actions to cotangent lifts. We use this result to prove rigidity for integrable systems on symplectic manifolds including systems with degenerate singularities which are invariant under a torus action
CitationMir, P.; Miranda, E. Rigidity of cotangent lifts and integrable systems. "Journal of geometry and physics", Novembre 2020, vol. 157, p. 103847-1-103847-11.