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Article Dans Une Revue Bull. Braz. Math. Soc. (N.S.) Année : 2010

Géométrie classique de certains feuilletages quadratiques

Résumé

The set $\mathscr{F}(2;2)$ of quadratic foliations on the complex projective plane can be identified with a \textsc{Zariski}'s open set of a projective space of dimension 14 on which acts $\mathrm{Aut}(\mathbb{P}^2(\mathbb{C})).$ We classify, up to automorphisms of $\mathbb{P}^2(\mathbb{C}),$ quadratic foliations with only one singularity. There are only four such foliations up to conjugacy; whereas three of them have a dynamic which can be easily described the dynamic of the fourth is still mysterious. This classification also allows us to describe the action of $\mathrm{Aut}(\mathbb{P}^2(\mathbb{C}))$ on $\mathscr{F}(2;2).$ On the one hand we show that the dimension of the orbits is more than 6 and that there are exactly two orbits of dimension $6;$ on the other hand we obtain that the closure of the generic orbit in $\mathscr{F} (2;2)$ contains at least seven orbits of dimension~7 and exactly one orbit of dimension $6.$

Dates et versions

hal-00459180 , version 1 (23-02-2010)

Identifiants

Citer

Dominique Cerveau, Julie Déserti, Djibrilla Garba Belko, Rafik Meziani. Géométrie classique de certains feuilletages quadratiques. Bull. Braz. Math. Soc. (N.S.), 2010, 41 (2), pp.161--198. ⟨hal-00459180⟩
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