Analytical moduli for unfoldings of saddle-node vector fields

Christiane Rousseau; Loïc Teyssier

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Analytical moduli for unfoldings of saddle-node vector fields

Christiane Rousseau·Loïc Teyssier

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Abstract

In this paper we consider germs of k-parameter generic families of analytic 2-dimensional vector fields unfolding a saddle-node of codimension k and we give a complete modulus of analytic classification under orbital equivalence and a complete modulus of analytic classification under conjugacy. The modulus is an unfolding of the corresponding modulus for the vector field with the saddle-node. The point of view is to compare the family with a "model family" via an equivalence (conjugacy) over canonical sectors. This is done by studying the asymptotic homology of the leaves and its consequences for solutions of the cohomological equation.

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BibTeX RIS

Christiane Rousseau, Loïc Teyssier. 2007-09-03. Analytical moduli for unfoldings of saddle-node vector fields. https://arxiv.org/abs/math/0702214

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