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There are three complete plane geometries of constant curvature: spherical, Euclidean and hyperbolic geometry. We explain how a closed oriented surface can carry a geometry which locally looks like one of these. Focussing on the hyperbolic…

代数几何 · 数学 2024-06-14 Peter B. Gothen

We develop the theory of the diagrammatics of surface cross sections to prove that there are an infinite number of homology 3-spheres smoothly embeddable in a homology 4-sphere but not in a homotopy 4-sphere. Our primary obstruction comes…

几何拓扑 · 数学 2026-01-16 Clayton McDonald

In this article, we propose a new approach for describing and understanding knots and links in a 3-manifold through the use of an embedded non-orientable surface. Specifically, we define a plat-like representation based on this…

几何拓扑 · 数学 2025-03-04 Alessia Cattabriga , Paolo Cavicchioli , Rama Mishra , Visakh Narayanan

In this paper, it is shown that every orientable closed 3-manifold maps with nonzero degree onto at most finitely many homeomorphically distinct irreducible non-geometric orientable closed 3-manifolds. Moreover, given any nonzero integer,…

几何拓扑 · 数学 2019-11-20 Yi Liu

As a generalisation of the periodic orbit structure often seen in reflection or mirror symmetric MHD equilibria, we consider equilibria with other orientation-reversing symmetries. An example of such a symmetry, which is a not a reflection,…

动力系统 · 数学 2024-12-06 David Perrella

We show that many 3-manifold groups have no nonabelian surface subgroups. For example, any link of an isolated complex surface singularity has this property. In fact, we determine the exact class of closed graph-manifolds which have no…

几何拓扑 · 数学 2014-10-01 Walter D. Neumann

Let $(M,g)$ be a closed oriented Riemannian $3$-manifold and suppose that there is a strongly irreducible Heegaard splitting $H$. We prove that $H$ is either isotopic to a minimal surface of index at most one or isotopic to the stable…

微分几何 · 数学 2019-11-21 Antoine Song

We study the geodesics on an invariant surface of a three dimensional Riemannian manifold. The main results are: the characterization of geodesic orbits; a Clairaut's relation and its geometric interpretation in some remarkable three…

微分几何 · 数学 2009-12-03 Stefano Montaldo , Irene I. Onnis

We introduce the concept of a homotopy motion of a subset in a manifold, and give a systematic study of homotopy motions of surfaces in closed orientable 3-manifolds. This notion arises from various natural problems in 3-manifold theory…

几何拓扑 · 数学 2022-06-03 Yuya Koda , Makoto Sakuma

In this paper, we show that any open orientable surface S can be properly embedded in H^3 as a minimizing H-surface for any 0<=H<1. We obtained this result by proving a version of the bridge principle at infinity for H-surfaces. We also…

微分几何 · 数学 2017-05-30 Baris Coskunuzer

We study the old problem of isometrically embedding a 2-dimensional Riemannian manifold into Euclidean 3-space. It is shown that if the Gaussian curvature vanishes to finite order and its zero set consists of two Lipschitz curves…

偏微分方程分析 · 数学 2014-01-17 Qing Han , Marcus Khuri

We consider circle patterns on closed tori equipped with complex projective structures. There is an embedding of the space of circle patterns to the Teichm\"{u}ller space of a punctured surface. Via the embedding, the Weil-Petersson…

几何拓扑 · 数学 2024-06-12 Wai Yeung Lam

We consider surfaces embedded in a 3D contact sub-Riemannian manifold and the problem of the finiteness of the induced distance (i.e., the infimum of the length of horizontal curves that belong to the surface). Recently it has been proved…

微分几何 · 数学 2024-07-15 Eugenio Bellini , Ugo Boscain

We prove that closed surfaces of all topological types, except for the non-orientable odd-genus ones, can be minimally embedded in the Riemannian product of a sphere and a circle of arbitrary radius. We illustrate it by obtaining some…

微分几何 · 数学 2018-03-20 José M. Manzano , Julia Plehnert , Francisco Torralbo

We prove that there is an algorithm which determines whether or not a given 2-polyhedron can be embedded into some integral homology 3-sphere. This is a corollary of the following main result. Let $M$ be a compact connected orientable…

几何拓扑 · 数学 2016-06-03 Dmitry Tonkonog

We provide the first non-trivial examples of quasi-isometric embeddings between curve complexes. These are induced either by puncturing a closed surface or via orbifold coverings. As a corollary, we give new quasi-isometric embeddings…

几何拓扑 · 数学 2014-11-11 Kasra Rafi , Saul Schleimer

A translation surface in the three-dimensional sphere $\mathbb{S}^3$ is a surface generated by the quaternionic product of two curves, called generating curves. In this paper, we present rigidity results for such surfaces. We introduce an…

微分几何 · 数学 2025-07-30 Tarcios Andrey Ferreira , João Paulo dos Santos

This is a latest survey article on embeddings of multibranched surfaces into 3-manifolds.

几何拓扑 · 数学 2020-05-18 Makoto Ozawa

In the present paper, we propose a new discrete surface theory on 3-valent embedded graphs in the 3-dimensional Euclidean space which are not necessarily discretization or approximation of smooth surfaces. The Gauss curvature and the mean…

微分几何 · 数学 2016-01-28 Motoko Kotani , Hisashi Naito , Toshiaki Omori

We study rotational surfaces in Euclidean 3-space whose Gauss curvature is given as a prescribed function of its Gauss map. By means of a phase plane analysis and under mild assumptions on the prescribed function, we generalize the…

微分几何 · 数学 2022-01-19 Antonio Bueno , Irene Ortiz