Exemples de feuilletages de Lie
Nous donnons des exemples de feuilletages de Lie sur une variété compacte qui ne se déforment pas en des feuilletages de Lie à holonomie discrète.
Existence and uniqueness of maps into affine homogeneous spaces
Existence de faisceaux réflexifs de rang deux sur à bonne cohomologie
Existence of weak homotopy equivalences between spectra for U-bordism with singularities
Existence of foliations of Euclidean spaces with all leaves compact.
Existence of foliations on 4-manifolds.
Existence of Rank 3 Vector Bundles with Given Chern Classes on Homogeneous Rational 3-Folds.
Exotic characteristic classes and subfoliations
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).
Exotic Characteristic Classes for Holomorphic Foliations.
Exotic smooth structures on nonpositively curved symmetric spaces.
Exotic structures on quotient spaces of -actions.
Exotische Sphären als Umgebungsränder in speziellen komplexen Räumen.
Extending immersed circles in the sphere to immersed disks in the ball.
Extension des immersions en codimension 1
Extension of cross-sections and a generalized de Rham theorem.
Extensions through codimension one to sense preserving mappings
The archetype for the questions considered is: “Which plane oriented curves in the plane are representable as the images of the boundary of a disk under holomorphic function?” This question is equivalent to: “Which immersion of the circle in the plane are extendable to smooth sense preserving (= non-negative jacobian) mappings of the closed disk with the jacobian positive on the boundary?”The second question is generalized in terms of the genus and dimension of the source and target. An exposition...
Factorizable groups of homeomorphisms
Faisceaux principaux et plongements
Families of functions dominated by distributions of -classes of mappings
A subsheaf of the sheaf of germs functions over an open subset of is called a sheaf of sub function. Comparing with the investigations of sheaves of ideals of , we study the finite presentability of certain sheaves of sub -rings. Especially we treat the sheaf defined by the distribution of Mather’s -classes of a mapping.
Families of jacobian manifolds and characteristic classes of surface bundles. I
In our previous work we have defined the notion of characteristic classes of surface bundles, which are differentiable fibre bundles whose fibres are closed oriented surfaces. In this paper we derive new relations between these characteristic classes by considering a canonical embedding of a given surface bundle with cross section to its associated family of Jacobian manifolds. As a key technical step we determine the first cohomology group of the mapping class group of oriented surfaces with coefficients...