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The present article studies combinatorial tilings of Euclidean or spherical spaces by polytopes, serving two main purposes: first, to survey some of the main developments in combinatorial space tiling; and second, to highlight some new and…

Metric Geometry · Mathematics 2010-05-24 Egon Schulte

In this work we obtain some geometric properties of biconservative surfaces into a Riemannian manifold. In particular, we shall study the relationship between biconservative surfaces and the holomorphicity of a generalized Hopf function.…

Differential Geometry · Mathematics 2014-06-27 S. Montaldo , C. Oniciuc , A. Ratto

We survey some results on real rational surfaces focused on their topology and their birational geometry.

Algebraic Geometry · Mathematics 2025-05-26 Frederic Mangolte

In this paper, we perform a detailed investigation on the various geometrical properties of trapped surfaces and the boundaries of trapped region in general relativity. This treatment extends earlier work on LRS II spacetimes to a general 4…

General Relativity and Quantum Cosmology · Physics 2018-05-16 Abbas Sherif , Rituparno Goswami , Sunil D Maharaj

This paper studies the topology of the constant energy surfaces of the double spherical pendulum.

Dynamical Systems · Mathematics 2013-05-17 Shengda Hu , Eduardo Leandro , Manuele Santoprete

Using digital topology approach, we construct digital models of closed surfaces as the intersection graphs of LCL covers of the surfaces. It is proved that digital models of closed surfaces are digital 2-dimensional surfaces preserving the…

Computational Geometry · Computer Science 2014-12-02 Alexander V. Evako

We usually think of 2-dimensional manifolds as surfaces embedded in Euclidean 3-space. Since humans cannot visualise Euclidean spaces of higher dimensions, it appears to be impossible to give pictorial representations of higher-dimensional…

Geometric Topology · Mathematics 2017-10-10 Hansjörg Geiges

We give a topological characterization of the n-dimensional pseudo-boundary of the (2n+1)-dimensional Euclidean space.

General Topology · Mathematics 2007-05-23 Alex Chigogidze , M. M. Zarichnyi

Using elementary methods of algebraic geometry, we present constructions of hyperelliptically fibred surfaces containing nodal fibres.

Algebraic Geometry · Mathematics 2024-02-29 Edoardo Ballico , Elizabeth Gasparim , Bruno Suzuki

We construct examples of flat surfaces in $\mathbb{H}^3$ which are graphs over a two-punctured horosphere and classify complete embedded flat surfaces in $\mathbb{H}^3$ with only one end and at most two isolated singularities.

Differential Geometry · Mathematics 2009-05-15 Armando V. Corro , Antonio Martinez , Francisco Milan

We discuss geometric properties of covers of closed hyperbolic manifolds of dimension $n\geq 3$, branched along a totally geodesic codimension two submanifold $\Sigma$. The results are mostly known to the experts but hard to find in the…

Geometric Topology · Mathematics 2026-05-05 Ursula Hamenstädt

We study the intrinsic geometry of area minimizing (and also of almost minimizing) hypersurfaces from a new point of view by relating this subject to quasiconformal geometry. For any such hypersurface we define and construct a so-called…

Differential Geometry · Mathematics 2018-05-08 Joachim Lohkamp

We present a variety of geometrical and combinatorial tools that are used in the study of geometric structures on surfaces: volume, contact, symplectic, complex and almost complex structures. We start with a series of local rigidity results…

Complex Variables · Mathematics 2024-02-28 Norbert A'Campo , Athanase Papadopoulos

The space-like hypersurface of the Universe at the present cosmological time is a three-dimensional manifold. A non-trivial global topology of this space-like hypersurface would imply that the apparently observable universe (the sphere of…

Astrophysics · Physics 2011-04-15 Boudewijn F. Roukema , Vincent Blanloeil

We address various topologies (de Bruijn, chordal ring, generalized Petersen, meshes) in various ways ( isometric embedding, embedding up to scale, embedding up to a distance) in a hypercube or a half-hypercube. Example of obtained…

Metric Geometry · Mathematics 2016-11-03 Adel Alahmadi , Husain Alhazmi , Shakir Ali , Michel Deza , Mathieu Dutour Sikirić , Patrick Solé

We classify biharmonic submanifolds with certain geometric properties in Euclidean spheres. For codimension 1, we determine the biharmonic hypersurfaces with at most two distinct principal curvatures and the conformally flat biharmonic…

Differential Geometry · Mathematics 2007-05-23 A. Balmuş , S. Montaldo , C. Oniciuc

We discuss several ways of packing a hyperbolic surface with circles (of either varying radii or all being congruent) or horocycles, and note down some observations related to their symmetries (or the absence thereof).

Geometric Topology · Mathematics 2022-02-21 Maria Dostert , Alexander Kolpakov

Starting from the (apparently) elementary problem of deciding how many different topological spaces can be obtained by gluing together in pairs the faces of an octahedron, we will describe the central role played by hyperbolic geometry…

Geometric Topology · Mathematics 2011-01-18 Carlo Petronio , Damian Heard , Ekaterina Pervova

We give a complete topological classification of minimal surfaces in Euclidian three-space.

Differential Geometry · Mathematics 2007-05-23 Charles Frohman , William H. Meeks

We discuss the Euclidean limit of hyperbolic SU(2)-monopoles, framed at infinity, from the point of view of pluricomplex geometry. More generally, we discuss the geometry of hypercomplex manifolds arising as limits of pluricomplex…

Differential Geometry · Mathematics 2012-01-27 Roger Bielawski , Lorenz Schwachhöfer