On définit la notion de volume dans un espace feuilleté. Si est une feuille compacte, alors toute feuille rencontrant un petit voisinage de a un volume très grand, ou sinon un volume qui est approximativement un multiple entier du volume de . Si toutes les feuilles sont compactes il y a trois objets apparentés à étudier. Premièrement la topologie de l’espace des feuilles ; puis l’holonomie des feuilles ; enfin il s’agit de savoir si les feuilles ont un volume localement borné. Nous établissons diverses implications entre ces concepts et nous donnons des exemples. Nous démontrons un résultat énoncé par Ehresmann, et publié sans démonstration : dans une variété feuilletée, si une feuille compacte a des voisinages saturés arbitrairement petits, alors l’holonomie de cette feuille est finie.
The notion of the “volume" of a leaf in a foliated space is defined. If is a compact leaf, then any leaf entering a small neighbourhood of either has a very large volume, or a volume which is approximatively an integral multiple of the volume of . If all leaves are compact there are three related objects to study. Firstly the topology of the quotient space obtained by identifying each leaf to a point ; secondly the holonomy of a leaf ; and thirdly whether the leaves have a locally bounded volume. We prove various implications relating these concepts and we also give some counterexamples. We give a proof of the result, published by Ehresmann without proof, that in a foliated manifold, if a compact leaf has arbitrarily small neighbourhoods, which are saturated by the leaves, then its holonomy is finite.
@article{AIF_1976__26_1_265_0, author = {Epstein, D. B. A.}, title = {Foliations with all leaves compact}, journal = {Annales de l'Institut Fourier}, pages = {265--282}, publisher = {Institut Fourier}, address = {Grenoble}, volume = {26}, number = {1}, year = {1976}, doi = {10.5802/aif.607}, mrnumber = {54 #8664}, zbl = {0313.57017}, language = {en}, url = {http://archive.numdam.org/articles/10.5802/aif.607/} }
TY - JOUR AU - Epstein, D. B. A. TI - Foliations with all leaves compact JO - Annales de l'Institut Fourier PY - 1976 SP - 265 EP - 282 VL - 26 IS - 1 PB - Institut Fourier PP - Grenoble UR - http://archive.numdam.org/articles/10.5802/aif.607/ DO - 10.5802/aif.607 LA - en ID - AIF_1976__26_1_265_0 ER -
Epstein, D. B. A. Foliations with all leaves compact. Annales de l'Institut Fourier, Tome 26 (1976) no. 1, pp. 265-282. doi : 10.5802/aif.607. http://archive.numdam.org/articles/10.5802/aif.607/
[1] Les connexions infinitésimales dans un espace fibré différentiable, Colloque de topologie, Bruxelles (1950), 29-55. | MR | Zbl
,[2] Periodic flows on 3-manifolds, Annals of Math., 95 (1972), 68-82. | MR | Zbl
,[3] Variétés feuilletées, Ann. Scuola Normale Sup. Pisa, 16 (1962), 367-397. | Numdam | MR | Zbl
,[4] Structures feuilletées et cohomologie à valeur dans un faisceau de groupoïdes, Comm. Math. Helv., 32 (1958), 248-329. | MR | Zbl
,[5] Topological Transformation Groups, Inter-Science, New York (1955). | MR | Zbl
and ,[6] C1 -actions of compact Lie groups on compact manifolds are C1 -equivalent to C∞ -actions, Am. Jour. of Math., 92 (1970) 748-760. | MR | Zbl
,[7] University of Warwick 1974.
, ,[8] Geodesic foliations by circles, (available from University of Warwick). | Zbl
,[9] Newman's theorems on transformation groups, Topology, 8 (1969) 203-207. | MR | Zbl
,[10] Sur certaines propriétés topologiques des variétés feuilletées, Act. Sci. et Ind. N° 1183, Hermann, Paris (1952). | MR | Zbl
,[11] A homeomorphism between the 3-sphere and the sum of two solid horned spheres, Annals of Math, 56 (1952), 354-362. | MR | Zbl
,[12] Foliations with all leaves compact, (to appear).
, and ,[13] Compact Foliations, Springer-Verlag Lecture Notes 484, Differential Topology and Geometry Conference in Dijon 1974. | Zbl
,[14] Topology, Allyn and Bacon (1970). | Zbl
,[15] A counterexample to the periodic orbit conjecture, (I.H.E.S. preprint, 1975). | Numdam | Zbl
,Cité par Sources :