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A singular riemannian foliation F on a complete riemannian manifold M is said to admit sections if each regular point of M is contained in a complete totally geodesic immersed submanifold (a section) that meets every leaf of F orthogonally…

Geometric Topology · Mathematics 2011-06-21 Marcos Alexandrino , Claudio Gorodski

The class of Riemannian orbifolds of dimension n defined by a lower bound on the sectional curvature and the volume and an upper bound on the diameter has only finitely many members up to orbifold homeomorphism. Furthermore, any class of…

Differential Geometry · Mathematics 2020-01-23 John Harvey

The main theorem states that any complete connected Riemannian manifold of bounded geometry can be isometrically realized as a leaf with trivial holonomy in a compact Riemannian foliated space.

Geometric Topology · Mathematics 2016-12-21 Jesús A. Álvarez López , Ramón Barral Lijó

We construct 4-dimensional Riemannian Lie groups carrying left-invariant conformal foliations with minimal leaves of codimension 2. We show that these foliations are holomorphic with respect to an (integrable) Hermitian structure which is…

Differential Geometry · Mathematics 2014-05-22 Sigmundur Gudmundsson

We consider the family of harmonic measures on a lamination $\mathcal{L}$ of a compact space $X$ by locally symmetric spaces $L$ of noncompact type, i.e. $L\simeq \Gamma_L\backslash G/K$. We establish a natural bijection between these…

Dynamical Systems · Mathematics 2015-09-03 Chris Connell , Matilde Martínez

We propose a method to extend submanifolds, singular Riemannian foliations and isometric actions from a boundary component of a noncompact symmetric space to the whole space. This extension method preserves minimal submanifolds,…

Differential Geometry · Mathematics 2014-11-07 Miguel Dominguez-Vazquez

We extend the classification of homogeneous codimension-one foliations on irreducible Riemannian symmetric spaces of noncompact type obtained by Berndt and Tamaru to the reducible case, thus completing it for all noncompact symmetric…

Differential Geometry · Mathematics 2021-12-07 Ivan Solonenko

A singular foliation on a complete riemannian manifold M is said to be riemannian if each geodesic that is perpendicular at one point to a leaf remains perpendicular to every leaf it meets. We prove that the regular leaves are equifocal,…

Differential Geometry · Mathematics 2011-02-01 Marcos M. Alexandrino , Dirk Toeben

In this paper, we establish a number of results about the topology of the leaves of a closed singular Riemannian foliation $(M,\fol)$. If $M$ is simply connected, we prove that the leaves are finitely covered by nilpotent spaces, and…

Differential Geometry · Mathematics 2022-04-01 Marco Radeschi , Elahe Khalili Samani

We consider a compact orientable hyperbolic 3-manifold with a compressible boundary. Suppose that we are given a sequence of geometrically finite hyperbolic metrics whose conformal boundary structures at infinity diverge to a projective…

Geometric Topology · Mathematics 2011-11-28 Inkang Kim , Cyril Lecuire , Ken'ichi Ohshika

We prove that Riemannian foliations on complete contractible manifolds have a closed leaf, and that all leaves are closed if one closed leaf has a finitely generated fundamental group. Under additional topological or geometric assumptions…

Differential Geometry · Mathematics 2018-03-16 Luis Florit , Oliver Goertsches , Alexander Lytchak , Dirk Toeben

We extend the proof of automatic continuity for homeomorphism groups of manifolds to non-compact manifolds and manifolds with marked points and their mapping class groups. Specifically, we show that, for any manifold $M$ homeomorphic to the…

Geometric Topology · Mathematics 2020-03-04 Kathryn Mann

Finite-sheeted covering mappings onto compact connected groups are studied. It is shown that a finite-sheeted covering mapping from a connected Hausdorff topological space onto a compact connected abelian group G must be a homeomorphism…

General Topology · Mathematics 2007-05-23 S. A. Grigorian , R. N. Gumerov

Every open manifold L of dimension greater than one has complete Riemannian metrics g with bounded geometry such that (L,g) is not quasi-isometric to a leaf of a codimension one foliation of a closed manifold. Hence no conditions on the…

Geometric Topology · Mathematics 2009-11-25 Paul A. Schweitzer

We show that the structure of proper holomorphic maps between the $n$-fold symmetric products, $n\geq 2$, of a pair of non-compact Riemann surfaces $X$ and $Y$, provided these are reasonably nice, is very rigid. Specifically, any such map…

Complex Variables · Mathematics 2018-11-05 Gautam Bharali , Indranil Biswas , Divakaran Divakaran , Jaikrishnan Janardhanan

This is a final step in a local classification of pseudo-Riemannian manifolds with parallel Weyl tensor that are not conformally flat or locally symmetric.

Differential Geometry · Mathematics 2009-03-06 Andrzej Derdzinski , Witold Roter

In this work we exhibit examples of $5$-manifolds that are not homeomorphic to any leaf of any $C^2$ codimension one foliation of any compact $6$-manifold but are homeomorphic to (proper) leaves of some $C^1$ codimension one foliations and…

Geometric Topology · Mathematics 2025-05-14 Carlos Meniño Cotón

In the Labourie-Loftin parametrization of the Hitchin component of surface group representations into SL(3,R), we prove an asymptotic formula for holonomy along rays in terms of local invariants of the holomorphic differential defining that…

Differential Geometry · Mathematics 2026-05-21 John Loftin , Andrea Tamburelli , Michael Wolf

We prove that a homogeneous matchbox manifold of any finite dimension is homeomorphic to a McCord solenoid, thereby proving a strong version of a conjecture of Fokkink and Oversteegen. The proof uses techniques from the theory of foliations…

Dynamical Systems · Mathematics 2011-07-13 Alex Clark , Steven Hurder

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