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...