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Quelques exemples de feuilletages espèces rares

Gilbert Hector — 1976

Annales de l'institut Fourier

On répartit habituellement les feuilles d’un feuilletage de codimension 1 sur une variété M en trois types : i) feuilles propres i.e. ouvertes dans leur adhérence ; ii) feuilles localement denses ; iii) feuilles exceptionnelles i.e. ni propres, ni localement denses. Lorsque le...

The diffeomorphism group of a Lie foliation

Gilbert HectorEnrique Macías-VirgósAntonio Sotelo-Armesto — 2011

Annales de l’institut Fourier

We describe explicitly the group of transverse diffeomorphisms of several types of minimal linear foliations on the torus T n , n 2 . We show in particular that non-quadratic foliations are rigid, in the sense that their only transverse diffeomorphisms are ± Id and translations. The description derives from a general formula valid for the group of transverse diffeomorphisms of any minimal Lie foliation on a compact manifold. Our results generalize those of P. Donato and P. Iglesias for T 2 , P. Iglesias and...

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