Étude des Γ-structures de codimension 1 sur la sphère S 2
Annales de l'Institut Fourier, Tome 23 (1973) no. 4, pp. 213-227.

Cet article contient une démonstration géométrique simple de π 2 (BΓ 1 r )=0 pour r=0,.

Ce résultat (démontré aussi par Mather comme corollaire d’un théorème beaucoup plus général) apparaît comme une conséquence du théorème de Michael Herman : Diff S 1 [ Diff S 1 , Diff S 1 ]=0.

L’appendice contient une étude des Γ structures sur les surfaces et un résultat sur la cohomologie de Diff S 1 .

This article contains a simple geometric demonstration of π 2 (BΓ 1 r )=0 for r=0,.

This result (which was also proved by Mather as a corollary of a far more general theorem) uses Michael Herman’s theorem: Diff S 1 [ Diff S 1 , Diff S 1 ]=0.

The reader will find in the appendix a study of Γ-structures on surfaces and a result about the cohomology group of Diff S 1 .

@article{AIF_1973__23_4_213_0,
     author = {Roger, Claude},
     title = {\'Etude des $\Gamma $-structures de codimension 1 sur la sph\`ere $S^2$},
     journal = {Annales de l'Institut Fourier},
     pages = {213--227},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {23},
     number = {4},
     year = {1973},
     doi = {10.5802/aif.488},
     mrnumber = {50 #1262},
     zbl = {0269.58006},
     language = {fr},
     url = {http://www.numdam.org/articles/10.5802/aif.488/}
}
TY  - JOUR
AU  - Roger, Claude
TI  - Étude des $\Gamma $-structures de codimension 1 sur la sphère $S^2$
JO  - Annales de l'Institut Fourier
PY  - 1973
SP  - 213
EP  - 227
VL  - 23
IS  - 4
PB  - Institut Fourier
PP  - Grenoble
UR  - http://www.numdam.org/articles/10.5802/aif.488/
DO  - 10.5802/aif.488
LA  - fr
ID  - AIF_1973__23_4_213_0
ER  - 
%0 Journal Article
%A Roger, Claude
%T Étude des $\Gamma $-structures de codimension 1 sur la sphère $S^2$
%J Annales de l'Institut Fourier
%D 1973
%P 213-227
%V 23
%N 4
%I Institut Fourier
%C Grenoble
%U http://www.numdam.org/articles/10.5802/aif.488/
%R 10.5802/aif.488
%G fr
%F AIF_1973__23_4_213_0
Roger, Claude. Étude des $\Gamma $-structures de codimension 1 sur la sphère $S^2$. Annales de l'Institut Fourier, Tome 23 (1973) no. 4, pp. 213-227. doi : 10.5802/aif.488. http://www.numdam.org/articles/10.5802/aif.488/

[1] Haefliger, Feuilletage sur les variétés ouvertes, Topology 9 (1970). | MR | Zbl

[2] Haefliger, Homotopy and Integrability, Manifolds Amsterdam, 1970, Springer 197. | Zbl

[3] Herman, C.R.A.S., 1971.

[4] Mather, On Haefliger's Classifying Space I, Bulletin AMS, 1971. | MR | Zbl

[5] Mather, The Vanishing of the Homology of Certain Groups of Homomorphisms.

[6] Moser, A Rapidly Convergent Iteraction Method and non Linear Differential Equations II, Annali della Scuola Normale Superiore de Pisa, Vol. XX, pp. 499-535 (1966). | Numdam | MR | Zbl

[7] Rosenberg et Thurston, Some Remarks on Foliations [Preprint]. | Zbl

Cité par Sources :