Injetividade como um fenômeno de transversalidade em geometrias de curvatura negativa

Abstract

In this work, we study the problem of injectivity of a local di eomorphism on dimension two of the point of view of the geometry of negative curvature. The main theorem provides a set of suficient conditions for injectivity of a local diffeomorphism f : M1 → M2 , between Hadamard surfaces, which depends on certain transversality conditions to be satisfied by simple foliations defined by horocycles associated to the metric with non positive curvature varying in M1 and M2 , and the pull-back in f of such foliations. This result gives a geometric definition for some of the results about the global asymptotic stability conjecture, in particular, it has a partial extension of the spectral condition for the case of Hadamard manifolds.