Results 11 to 20 of about 2,312 (213)

Foliation adjunction. [PDF]

open access: yesMath Ann
Abstract We present an adjunction formula for foliations on varieties and we consider applications of the adjunction formula to the cone theorem for rank one foliations and the study of foliation singularities.
Cascini P, Spicer C.
europepmc   +6 more sources

Logarithmic foliations [PDF]

open access: yesAnnales de la Faculté des sciences de Toulouse : Mathématiques, 2021
The purpose of this paper is to study singular holomorphic foliations of arbitrary codimension defined by logarithmic forms on projective spaces.
Cerveau, Dominique, Neto, Alcides Lins
openaire   +5 more sources

Examples of foliations with foliated geometric structures [PDF]

open access: yesPacific Journal of Mathematics, 1990
We present examples of foliated compact nilmanifolds, whose foliations are neither simple nor given by suspensions, admitting various foliated geometric structures. For example, we construct foliations which are: 1. transversally symplectic but not transversally Kähler, 2. transversally symplectic but not transversally holomorphic, 3.
Cordero, Luis A., Wolak, Robert A.
openaire   +3 more sources

Holomorphic foliations and deformations of the Hopf foliation [PDF]

open access: yesPacific Journal of Mathematics, 1984
A deformation theory for transversally holomorphic foliations is developed here and used to give an explicit description of the transver- sally holomorphic foliations near the "Hopf foliations" on odd dimen- sional spheres. Introduction. In (1) and (2) we began the study of the deformation theory of holomorphic foliations on a smooth compact manifold ...
Duchamp, T., Kalka, M.
openaire   +2 more sources

Foliated vector bundles and Riemannian foliations [PDF]

open access: yesComptes Rendus. Mathématique, 2011
In this Note we prove the equivalence between the Riemannian foliation and each of the following conditions: 1) the lifted foliation F r on the bundle of r
Popescu, Paul, Popescu, Marcela
openaire   +3 more sources

Schlesinger Foliation for Deformations of Foliations [PDF]

open access: yesInternational Mathematics Research Notices, 2017
In this article, we show that for any deformation of analytic foliations, there exists a maximal analytic singular foliation on the space of parameters along the leaves of which the deformation is integrable.
openaire   +3 more sources

Stability of Foliations [PDF]

open access: yesTransactions of the American Mathematical Society, 1973
Let X be a compact manifold and let k be an integer. It is shown that the set of homeomorphism conjugacy classes of germs at X of foliations of codimension k and the set of ...
Levine, Harold I., Shub, Michael
openaire   +2 more sources

Foliation cones

open access: yesGeometry & Topology Monographs, 1999
52 pages.
Cantwell, John, Conlon, Lawrence
openaire   +2 more sources

Surgery on Foliations

open access: yes, 2022
In this paper, we set up two surgery theories and two kinds of Whitehead torsion for foliations. First, we construct a bounded surgery theory and bounded Whitehead torsion for foliations, which correspond to the Connes' foliation algebra in the K-theory of operator algebras, in the sense that there is an analogy between surgery theory and index theory,
Attie, Oliver, Cappell, Sylvain
openaire   +2 more sources

Foliated hyperbolicity and foliations with hyperbolic leaves [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2018
Given a lamination in a compact space and a laminated vector field $X$ which is hyperbolic when restricted to the leaves of the lamination, we distinguish a class of $X$-invariant probabilities that describe the behavior of almost every $X$-orbit in every leaf, which we call Gibbs $u$-states. We apply this to the case of foliations in compact manifolds
Bonatti, Christian   +2 more
openaire   +3 more sources

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