Sur l'invariance topologique de la classe de Godbillon-Vey. (On the topological invariance of the Godbillon-Vey class.)
type: Item
instance of: scholarly article
title: Sur l'invariance topologique de la classe de Godbillon-Vey. (On the topological invariance of the Godbillon-Vey class.)
zbMATH Open document ID: 0633.58025
publication date: 1987-01-01T00:00:00Z
full work available at URL: http://www.numdam.org/item
full work available at URL: https://eudml.org/doc/74781
review text: L'invariant de Godbillon-Vey, classiquement défini pour les feuilletages de classes \(C^ 2\), peut aussi se définir pour les feuilletages de classe \(C^ 2\) par morceaux. Nous montrons que, dans cette catégorie étendue, l'invariant de Godbillon-Vey n'est pas invariant par conjugaison topologique.
Mathematics Subject Classification ID: 37C85
Mathematics Subject Classification ID: 37C80
zbMATH DE Number: 4030554
zbMATH Keywords: Godbillon-Vey invariant
zbMATH Keywords: foliations
author: Étienne Ghys
MaRDI profile type: Publication
OpenAlex ID: W2315367087
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DOI: 10.5802/AIF.1111
published in: Annales de l’institut Fourier
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description: scientific article; zbMATH DE number 4030554