Le but de ce travail est de définir un homomorphisme caractéristique pour un sous-feuilletage et d’exposer la relation existante entre cet homomorphisme et l’homomorphisme caractéristique (à la Bott) pour chaque feuilletage. En plus, on donne deux applications : 1) on prouve que le feuilletage de Yamato en codimension 2 n’est pas homotopique à dans un sous-feuilletage de codimension (1,2); 2) on obtient une obstruction à l’existence de transformations infinitésimales d’un feuilletage qui soient partout indépendantes et transverses, et telles que et ces transformations engendrent un nouveau feuilletage .
This paper is devoted to define a characteristic homomorphism for a subfoliation and to study its relation with the usual characteristic homomorphism for each foliation (as defined by Bott). Moreover, two applications are given: 1) the Yamato’s 2-codimensional foliation is shown to be no homotopic to in a (1,2)-codimensional subfoliation; 2) an obstruction to the existence of everywhere independent and transverse infinitesimal transformations of a foliation is obtained, when and these transformations generated a new foliation .
@article{AIF_1981__31_2_61_0, author = {Cordero, Luis A. and Masa, X.}, title = {Characteristic classes of subfoliations}, journal = {Annales de l'Institut Fourier}, pages = {61--86}, publisher = {Institut Fourier}, address = {Grenoble}, volume = {31}, number = {2}, year = {1981}, doi = {10.5802/aif.829}, mrnumber = {83a:57033}, zbl = {0442.57009}, language = {en}, url = {http://archive.numdam.org/articles/10.5802/aif.829/} }
TY - JOUR AU - Cordero, Luis A. AU - Masa, X. TI - Characteristic classes of subfoliations JO - Annales de l'Institut Fourier PY - 1981 SP - 61 EP - 86 VL - 31 IS - 2 PB - Institut Fourier PP - Grenoble UR - http://archive.numdam.org/articles/10.5802/aif.829/ DO - 10.5802/aif.829 LA - en ID - AIF_1981__31_2_61_0 ER -
Cordero, Luis A.; Masa, X. Characteristic classes of subfoliations. Annales de l'Institut Fourier, Tome 31 (1981) no. 2, pp. 61-86. doi : 10.5802/aif.829. http://archive.numdam.org/articles/10.5802/aif.829/
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