On donne une obstruction topologique pour qu’un feuilletage soit un sous-feuilletage d’un autre en comparant les images des homomorphismes caractéristiques associés (dans le sens de Lehmann).
A topological obstruction for a foliation be a sub-foliation of another is given by comparing the images of the associated characteristic homomorphisms (in the sense of Lehmann).
@article{AIF_1976__26_1_225_0, author = {Cordero, Luis A. and Gadea, P. M.}, title = {Exotic characteristic classes and subfoliations}, journal = {Annales de l'Institut Fourier}, volume = {26}, year = {1976}, pages = {225-237}, doi = {10.5802/aif.605}, mrnumber = {53 \#6584}, zbl = {0313.57010}, language = {en}, url = {http://dml.mathdoc.fr/item/AIF_1976__26_1_225_0} }
Cordero, Luis A.; Gadea, P. M. Exotic characteristic classes and subfoliations. Annales de l'Institut Fourier, Tome 26 (1976) pp. 225-237. doi : 10.5802/aif.605. http://gdmltest.u-ga.fr/item/AIF_1976__26_1_225_0/
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