Abstract
Curvature-type invariants of Hamiltonian systems generalize sectional curvatures of Riemannian manifolds: the negativity of the curvature is an indicator of the hyperbolic behavior of the Hamiltonian flow. In this paper, we give a self-contained description of the related constructions and facts; they lead to a natural extension of the classical results about Riemannian geodesic flows and indicate some new phenomena.
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Published in Russian in Trudy Matematicheskogo Instituta imeni V.A. Steklova, 2007, Vol. 256, pp. 31–53.
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Agrachev, A.A. The curvature and hyperbolicity of Hamiltonian systems. Proc. Steklov Inst. Math. 256, 26–46 (2007). https://doi.org/10.1134/S0081543807010026
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DOI: https://doi.org/10.1134/S0081543807010026