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The generic rational differential equation dw/dz=P_n(z,w)/Q_n(z,w) on \mathbb{C}\mathbb{P}^2 carries no interesting transverse structure

Published online by Cambridge University Press:  28 November 2001

M. BELLIART
Affiliation:
C.N.R.S. U.M.R. 8524, U.F.R. de Mathématiques, Université Lille I, 59655 Villeneuve d'Ascq Cedex, France (e-mail: {belliart,liousse,loray}@gat.univ-lille1.fr)
I. LIOUSSE
Affiliation:
C.N.R.S. U.M.R. 8524, U.F.R. de Mathématiques, Université Lille I, 59655 Villeneuve d'Ascq Cedex, France (e-mail: {belliart,liousse,loray}@gat.univ-lille1.fr)
F. LORAY
Affiliation:
C.N.R.S. U.M.R. 8524, U.F.R. de Mathématiques, Université Lille I, 59655 Villeneuve d'Ascq Cedex, France (e-mail: {belliart,liousse,loray}@gat.univ-lille1.fr)
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Abstract

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Let \Gamma be a non-solvable pseudogroup of holomorphic transformations in one variable fixing zero. Then for any z_0 sufficiently near zero and outside some real analytic set containing zero and depending on \Gamma, for any germ of biholomorphism \phi defined at z_0 with \phi(z_0)-z_0 sufficiently small, there exists a sequence \gamma_n \in \Gamma which tends to \phi uniformly on some neighborhood of zero. If we let \Gamma be the holonomy pseudogroup of a compact leaf, we find that holomorphic codimension-1 foliations with non-solvable holonomy admit no transverse geometric structure in addition to the conformal one. This applies, in particular, to the singular foliation induced on \mathbb{C}\mathbb{P}^2 by the differential equation dw/dz = P_n(z,w)/Q_n(z,w) where P_n and Q_n are the generic polynomials of degree n, hence the title of this paper.

Information

Type
Research Article
Copyright
2001 Cambridge University Press