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We explicitly compute the diffeomorphism group of several types of linear foliations (with dense leaves) on the torus $T^n$, $n\geq 2$, namely codimension one foliations, flows, and the so-called non-quadratic foliations. We show in…

Differential Geometry · Mathematics 2008-12-16 G. Hector , E. Macías-Virgós , A. Sotelo-Armesto

In 2002 Meersseman-Verjovsky [2] constructed a smooth, codimension-one, foliation on 5-sphere by complex surfaces with two compact leaves. The aim of this note is to improve their construction in order to give a smooth foliation on 5-sphere…

Complex Variables · Mathematics 2010-03-24 Guillaume Deschamps

We consider classes of noncompact n-folds with trivial canonical bundle, that are linear foliations on nonsingular projective varieties, in general without a projection to the base. We obtain them as first-order deformations of total spaces…

Algebraic Geometry · Mathematics 2007-12-05 Antonio Ricco

We provide a classification of complex projective surfaces with a holomorphic foliation whose group of birational symetries is infinite.

Complex Variables · Mathematics 2007-05-23 S. Cantat , C. Favre

This manuscript is an introduction to the theory of holomorphic foliations on the complex projective plane. Historically the subject has emerged from the theory of ODEs in the complex domain and various attempts to solve Hilbert's 16th…

Dynamical Systems · Mathematics 2007-05-23 Saeed Zakeri

We describe the structure of regular codimension $1$ foliations with numerically projectively flat tangent bundle on complex projective manifolds of dimension at least $4$. Along the way, we prove that either the normal bundle of a regular…

Algebraic Geometry · Mathematics 2024-01-09 Stéphane Druel

We study non-compact surfaces obtained by gluing strips $\mathbb{R}\times(-1,1)$ with at most countably many boundary intervals along some these intervals. Every such strip possesses a foliation by parallel lines, which gives a foliation on…

Geometric Topology · Mathematics 2017-10-19 Sergiy Maksymenko , Eugene Polulyakh

We introduce the notion of Galois holomorphic foliation on the complex projective space as that of foliations whose Gauss map is a Galois covering when restricted to an appropriate Zariski open subset. First, we establish general criteria…

Dynamical Systems · Mathematics 2015-03-17 Andrés Beltrán , Maycol Falla Luza , David Marín , Marcel Nicolau

Let $\mathcal{F}$ be a codimension one holomorphic foliation in $\mathbb{P}^n$, $n\geq 2$, leaving invariant a real-analytic Levi-flat hypersurface $M$ with regular part $M^{*}$. Then every leaf of $\mathcal{F}$ outside $\overline{M^{*}}$…

Complex Variables · Mathematics 2014-03-20 Arturo Fernández-Pérez , Rogério Mol , Rudy Rosas

In this paper, we develop $L^2$ theory for Riemannian and Hermitian foliations on manifolds with basic boundary. We establish a decomposition theorem, various vanishing theorems, a twisted duality theorem for basic cohomologies and an…

Differential Geometry · Mathematics 2024-02-14 Qingchun Ji , Jun Yao

This is a survey on bi-Lagrangian manifolds, which are symplectic manifolds endowed with two transversal Lagrangian foliations. We also study the non-integrable case (i.e., a symplectic manifold endowed with two transversal Lagrangian…

Symplectic Geometry · Mathematics 2015-12-14 Fernando Etayo , Rafael Santamaría , Ujué R. Trías

We study Lie foliations on compact manifolds, in case the Lie group is compact. Our main results improve Tischler classical result on the existence of fibration and, as an application, we study the case the manifold has an amenable…

Geometric Topology · Mathematics 2010-07-16 Marcelo Tavares

We obtain a local classification of complex homothetic foliations on Kaehler manifolds by complex curves. This is used to construct almost Kaehler, Ricci-flat metrics subject to additional curvature properties.

Differential Geometry · Mathematics 2012-06-18 Simon G. Chiossi , Paul-Andi Nagy

We present existence results for certain singular 2-dimensional foliations on 4-manifolds. The singularities can be chosen to be simple, e.g. the same as those that appear in Lefschetz pencils. There seems to be a wealth of such creatures…

Geometric Topology · Mathematics 2014-10-01 Alexandru Scorpan

This paper, which is an outgrowth of a previous paper of the authors, continues the study of dimension 1 foliations on non-metrisable manifolds emphasising some anomalous behaviours. We exhibit surfaces with various extra properties like…

General Topology · Mathematics 2013-03-28 Mathieu Baillif , Alexandre Gabard , David Gauld

A transversely holomorphic foliation on a compact complex manifold, exhibits a compact stable leaf if and only if the set of compact leaves is not a zero measure subset of the manifold.

Geometric Topology · Mathematics 2012-04-03 Bruno Scardua

Any leafwise connection on a fibre bundle over a foliated manifold is proved to come from a connection on this fibre bundle.

Mathematical Physics · Physics 2007-05-23 G. Sardanashvily

In this paper, we study affine manifolds endowed with linear foliations. These are foliations defined by vector subspaces invariant by the linear holonomy. We show that an $n$-dimensional compact, complete, and oriented affine manifold…

Differential Geometry · Mathematics 2021-07-06 Tsemo Aristide

We present a few general results on foliations of 4-manifolds by surfaces: existence, tautness, relations to minimal genus of embedded surfaces; as well as some open problems. We hope to stimulate interest in this area.

Geometric Topology · Mathematics 2007-05-23 Alexandru Scorpan

We summarize our geometric and topological description of compact eight-manifolds which arise as internal spaces in ${\cal N}=1$ flux compactifications of M-theory down to $\mathrm{AdS}_3$, under the assumption that the internal part of the…

High Energy Physics - Theory · Physics 2023-09-28 Elena Mirela Babalic , Calin Iuliu Lazaroiu