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Nov 8, 2012 at 11:18 comment added Barbara Schapira Hello I forgot to thank you earlier for this answer. But in Katok-Strelcyn, you need as you said a nice compactification. The example I had in mind is geodesic flows on complete non compact negatively curved manifolds, which are unbounded, and cannot be compactified without changing strongly the metric, which changes of course the Lyapounov exponents. Bests Barbara
Jul 20, 2012 at 19:37 history answered Matheus CC BY-SA 3.0