Classicfication Locale Simultanée de Deux Formes Symplectiques Compatibles.
An elementary proof of a Lima's theorem for surfaces.
An elementary proof of the following theorem is given: THEOREM. Let M be a compact connected surface without boundary. Consider a C∞ action of Rn on M. Then, if the Euler-Poincaré characteristic of M is non zero there exists a fixed point.
Fibrations en tores isotropes et lagrangiens
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