Modèles locaux de champs et de formes
Astérisque, no. 30 (1975) , 183 p.

In this paper, we obtain some results of finite determination for vector fields and 2-closed forms, (Finite determinated vector fields or forms admit polynomial models). The whole paper is based on a study of certain singular differential equations such that where X is a singular vector field. The most important results concerning vector fields are obtained for germs in the plane. We give conditions under which formal equivalence or existence of formal integral implie C -equivalence or existence of C integral. For démonstrations, we use the "blowing up" method and some other results of F. Takens and F. Dumortier. We also study germs of 2-closed forms in and show that all the germs of codimension less than 3 are stable.

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     language = {fr},
     url = {http://www.numdam.org/item/AST_1975__30__1_0/}
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Roussarie, Robert. Modèles locaux de champs et de formes. Astérisque, no. 30 (1975), 183 p. http://numdam.org/item/AST_1975__30__1_0/

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