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In this work we consider foliations of compact manifolds whose holonomy pseudo-group is expansive, and analyze their number of compact leaves. Our main result is that in the codimension-one case this number is at most finite, and we give…

Dynamical Systems · Mathematics 2024-10-24 Pablo D. Carrasco , Elias Rego , Jana Rodriguez-Hertz

This paper presents a simplified geometric proof of the Molino-Alexandrino-Radeschi (MAR) Theorem, which states that the closure of a singular Riemannian foliation on a complete Riemannian manifold is itself a smooth singular Riemannian…

Differential Geometry · Mathematics 2026-05-11 Mateus de Melo , Ivan Struchiner

We generalize the notion of fixed point homogeneous isometric group actions to the context of singular Riemannian foliations. We find that in some cases, positively curved manifolds admitting these so-called point leaf maximal SRF's are…

Differential Geometry · Mathematics 2018-05-03 Adam Moreno

In this work, we consider a specific space of foliations with $C^1$ leaves and H\"older holonomies of the square $M=[0,1]^2$, with some topology and we show that a generic such foliation is non-absolutely continuous, furthermore, the…

Dynamical Systems · Mathematics 2018-05-01 Enzo Fuentes

Some properties of Riemannian foliations on closed manifolds are generalized to compact equicontinuous foliated spaces. For instance, it is proved that all holonomy covers of the leaves are quasi-isometric to each other.

Geometric Topology · Mathematics 2013-11-15 Jesús A. Álvarez López , Alberto Candel

We show that the Gromov-Hausdorff limit of a sequence of leaves in a compact foliation is a covering space of the limiting leaf which is no larger than this leaf's holonomy cover. We also show that convergence to such a limit is smooth…

Differential Geometry · Mathematics 2013-04-24 Pablo Lessa

This article studies codimension one foliations on projective man-ifolds having a compact leaf (free of singularities). It explores the interplay between Ueda theory (order of flatness of the normal bundle) and the holo-nomy representation…

Classical Analysis and ODEs · Mathematics 2018-08-31 Benoît Claudon , Frank Loray , Jorge Pereira , Frédéric Touzet

In these introductory notes we give the basics of the theory of holomorphic foliations and laminations. The emphasis is on the theory of harmonic currents and unique ergodicity for laminations transversally Lipschitz in CP^2 and for generic…

Dynamical Systems · Mathematics 2008-03-06 John Erik Fornaess , Nessim Sibony

We investigate compact Hausdorff foliations on compact Riemannian manifolds in the context of the Gromov-Hausdorff distance theory. We give some sufficient conditions for such foliations to be separated in the Gromov-Hausdorff topology.

Differential Geometry · Mathematics 2008-12-23 Wojciech Kozłowski , Szymon M. Walczak

We prove that singular Riemannian foliations in Euclidean spheres can be defined by polynomial equations.

Differential Geometry · Mathematics 2015-04-17 Alexander Lytchak , Marco Radeschi

In this paper we present some new results on the tautness of Riemannian foliations in their historical context. The first part of the paper gives a short history of the problem. For a closed manifold, the tautness of a Riemannian foliation…

Differential Geometry · Mathematics 2015-05-13 J. I. Royo Prieto , M. Saralegi-Aranguren , R. Wolak

This report discusses recent results as well as new perspectives in the ergodic theory for Riemann surface laminations, with an emphasis on singular holomorphic foliations by curves. The central notions of these developments are leafwise…

Dynamical Systems · Mathematics 2020-06-03 Viet-Anh Nguyen

A method is presented for constructing closed surfaces out of Euclidean polygons with infinitely many segment identifications along the boundary. The metric on the quotient is identified. A sufficient condition is presented which guarantees…

Dynamical Systems · Mathematics 2014-11-11 André de Carvalho , Toby Hall

We study conformal structure and topology of leaves of singular foliations by Riemann surfaces.

Complex Variables · Mathematics 2016-12-02 Nessim Sibony , Erlend Fornæss Wold

We introduce the holonomy of a singular leaf $L$ of a singular foliation as a sequence of group morphisms from $\pi_n(L)$ to the $\pi_{n-1}$ of the universal Lie $\infty$-algebroid of the transverse foliation of $L$. We include these…

Differential Geometry · Mathematics 2021-12-15 Camille Laurent-Gengoux , Leonid Ryvkin

In this paper we introduce the concept of singular Finsler foliation, which generalizes the concepts of Finsler actions, Finsler submersions and (regular) Finsler foliations. We show that if $\mathcal{F}$ is a singular Finsler foliation on…

Differential Geometry · Mathematics 2019-09-11 Marcos M. Alexandrino , Benigno O. Alves , Miguel Angel Javaloyes

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

We present examples of foliations with infinite dimensional basic symplectic and com- plex cohomologies, along with a general sufficient condition for such phenomena. This puts re- strictions on possible generalizations of several…

Differential Geometry · Mathematics 2017-05-08 Andrzej Czarnecki , Paweł Raźny

We introduce the concept of morphism of pseudogroups generalizing the \'etal\'e morphisms of Haefliger. With our definition, any continuous foliated map induces a morphism between the corresponding holonomy pseudogroups. The main theorem…

Geometric Topology · Mathematics 2013-11-15 Jesús A. Álvarez López , Xosé M. Masa

In this article we investigate the natural domain of definition of a holonomy map associated to a singular holomorphic foliation of the complex projective plane. We prove that germs of holonomy between algebraic curves can have large sets…

Dynamical Systems · Mathematics 2014-04-22 Gabriel Calsamiglia , Bertrand Deroin , Sidney Frankel , Adolfo Guillot