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This paper is devoted to the study of codimension two holomorphic foliations and distributions. We prove the stability of complete intersection of codimension two distributions and foliations in the local case. Converserly we show the…

Dynamical Systems · Mathematics 2016-06-01 Dominique Cerveau , Alcides Lins Neto

This thesis is concerned with equidistant foliations of Euclidean space, i.e. partitions into complete, connected, properly embedded smooth submanifolds. The space of leaves is an Alexandrov space of nonnegative curvature and the canonical…

Differential Geometry · Mathematics 2007-12-04 Christian Boltner

We study the relationship between singular holomorphic foliations in $(\mathbb{C}^{2},0)$ and their separatrices. Under mild conditions we describe a complete set of analytic invariants characterizing foliations with quasi-homogeneous…

Complex Variables · Mathematics 2014-07-18 L. M. Câmara , B. Scardua

We study projective homogeneous varieties under an action of a projective unitary group (of outer type). We are especially interested in the case of (unitary) grassmannians of totally isotropic subspaces of a hermitian form over a field,…

Algebraic Geometry · Mathematics 2012-04-03 Nikita A. Karpenko

We investigate the accumulation to singular points of leaves of codimension one foliations whose normal bundle is ample, with emphasis on the nonexistence of Levi-flat hypersurfaces.

Complex Variables · Mathematics 2007-06-12 Marco Brunella

We establish a structure theorem for degree three codimension one foliations on projective spaces of dimension $n\ge 3$, extending a result by Loray, Pereira, and Touzet for degree three foliations on $\mathbb P^3$. We show that the space…

Algebraic Geometry · Mathematics 2021-12-13 Raphael Constant da Costa , Ruben Lizarbe , Jorge Vitório Pereira

We classify irreducible polar foliations of codimension $q$ on quaternionic projective spaces $\mathbb H P^n$, for all $(n,q)\neq(7,1)$. We prove that all irreducible polar foliations of any codimension (resp. of codimension one) on…

Differential Geometry · Mathematics 2015-07-13 Miguel Dominguez-Vazquez , Claudio Gorodski

In this paper we study singular riemannian foliations that have sections,i.e., totally geodesic complete immersed submanifolds that meet each leaf orthogonally and whose dimensions are the codimensions of the regular leaves. We prove here…

Differential Geometry · Mathematics 2007-05-23 Marcos M. Alexandrino

We look at natural foliations on the Painlev\'e VI moduli space of regular connections of rank 2 on $\pp ^1 -{t_1,t_2,t_3,t_4}$. These foliations are fibrations, and are interpreted in terms of the nonabelian Hodge filtration, giving a…

Algebraic Geometry · Mathematics 2011-06-13 Frank Loray , Masa-Hiko Saito , Carlos T. Simpson

We aim to classify codimension 1 foliations $\mathscr{F}$ with canonical singularities and $\nu(K_{\mathscr{F}}) < 3$ on threefolds of general type. We prove a classification result for foliations satisfying these conditions and having…

Algebraic Geometry · Mathematics 2023-03-22 Aleksei Golota

We study the geometry of the leaf closure space of regular and singular Riemannian foliations. We give conditions which assure that this leaf space is a singular symplectic or K\"ahler space.

Differential Geometry · Mathematics 2007-05-23 Robert Wolak

A cohomogeneity one manifold is a manifold with the action of a compact Lie group, whose quotient is one dimensional. Such manifolds are of interest in Riemannian geometry, in the context of nonnegative sectional curvature, as well as in…

Differential Geometry · Mathematics 2007-12-11 Corey A. Hoelscher

A way to characterize the space of leaves of a foliation in terms of connections is proposed. A particular example of vertex algebra cohomology of codimension one foliations on complex curves is considered.

Functional Analysis · Mathematics 2022-04-06 A. Zuevsky

It is known after Jouanolou that a general holomorphic foliation of degree $\geq2$ in projective space has no algebraic leaf. We give formulas for the degrees of the subvarieties of the parameter space of one-dimensional foliations that…

Algebraic Geometry · Mathematics 2010-03-31 Viviana Ferrer , Israel Vainsencher

This paper deals with codimension one (may be singular) foliations on compact K\"alher manifolds whose conormal bundle is assumed to be pseudo-effective. Using currents with minimal singularities, we show that one can endow the space of…

Complex Variables · Mathematics 2011-03-25 Frederic Touzet

Let $\mathcal{F}$ be a transversely orientable codimension one minimal foliation without vanishing cycles of a manifold $M$. We show that if the fundamental group of each leaf of $\mathcal{F}$ has polynomial growth of degree $k$ for some…

Geometric Topology · Mathematics 2017-07-19 Tomoo Yokoyama

We propose a study of the foliations of the projective plane induced by simple derivations of the polynomial ring in two indeterminates over the complex field. These correspond to foliations which have no invariant algebraic curve nor…

Algebraic Geometry · Mathematics 2018-12-17 Gael Cousin , Luis Gustavo Mendes , Ivan Pan

Motivated by Gray's work on tube formulae for complex submanifolds of complex projective space equipped with the Fubini-Study metric, Riemannian foliations of projective space are studied. We prove that there are no complex Riemannian…

Differential Geometry · Mathematics 2013-07-11 Thomas Murphy

In this work, we study dominant rational maps preserving singular holomorphic codimension one foliations on projective manifolds and that exhibit non-trivial transverse dynamics.

Algebraic Geometry · Mathematics 2020-11-02 Federico Lo Bianco , Jorge Pereira , Erwan Rousseau , Frédéric Touzet

Given a smooth foliation on a closed manifold, basic forms are differential forms that can be expressed locally in terms of the transverse variables. The space of basic forms yields a differential complex, because the exterior derivative…

Differential Geometry · Mathematics 2025-03-17 Georges Habib , Ken Richardson