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We consider generalized $\alpha$-attractor models whose scalar potentials are globally well-behaved and whose scalar manifolds are elementary hyperbolic surfaces. Beyond the Poincar\'e disk $\mathbb{D}$, such surfaces include the hyperbolic…

High Energy Physics - Theory · Physics 2018-03-22 Elena Mirela Babalic , Calin Iuliu Lazaroiu

In this work we find all helicoidal surfaces in Minkowski space with constant mean curvature whose generating curve is a the graph of a polynomial or a Lorentzian circle. In the first case, we prove that the degree of the polynomial is $0$…

Differential Geometry · Mathematics 2010-06-15 Rafael López , Esma Demir

We show that the diameter of the image of the skinning map on the deformation space of an acylindrical reflection group is bounded by a constant depending only on the topological complexity of the components of its boundary, answering a…

Geometric Topology · Mathematics 2025-11-07 Yusheng Luo , Yongquan Zhang

We consider the smooth inverse mean curvature flow of strictly convex hypersurfaces with boundary embedded in $\mathbb{R}^{n+1},$ which are perpendicular to the unit sphere from the inside. We prove that the flow hypersurfaces converge to…

Differential Geometry · Mathematics 2016-03-09 Ben Lambert , Julian Scheuer

Based on extensive numerical evidence, a recent paper (Sheng Chen et al., Eur. J. Phys. {\bf 45} (2024), 045703) suggested that the potential of a uniformly charged rose-shaped disk in the plane of the disk has a simple asymptotic form. We…

Classical Physics · Physics 2025-06-13 Alina E. Sagaydak , Zurab K. Silagadze

We study deformations of free boundary constant mean curvature (CMC) hypersurfaces whose Jacobi operator is degenerate due to symmetries of the ambient space. The value of the mean curvature and the ambient metric are allowed to vary…

Differential Geometry · Mathematics 2017-12-29 Renato G. Bettiol , Paolo Piccione , Bianca Santoro

This is a survey on the global theory of constant mean curvature surfaces in Riemannian homogeneous 3-manifolds. These ambient 3-manifolds include the eight canonical Thurston 3-dimensional geometries, i.e. R3, H3, S3, H2 \times R, S2…

Differential Geometry · Mathematics 2010-04-28 Isabel Fernandez , Pablo Mira

We construct a sequence of compact, oriented, embedded, two-dimensional surfaces of genus one into Euclidean 3-space with prescribed, almost constant, mean curvature of the form $H(X)=1+{A}{|X|^{-\gamma}}$ for $|X|$ large, when $A<0$ and…

Analysis of PDEs · Mathematics 2018-10-16 Paolo Caldiroli , Monica Musso

We present new examples of complete embedded self-similar surfaces under mean curvature by gluing a sphere and a plane. These surfaces have finite genus and are the first examples of self-shrinkers in $\mathbb R^3$ that are not rotationally…

Differential Geometry · Mathematics 2015-01-14 Xuan Hien Nguyen

A discrete conformality for polyhedral metrics on surfaces is introduced in this paper which generalizes earlier work on the subject. It is shown that each polyhedral metric on a surface is discrete conformal to a constant curvature…

Geometric Topology · Mathematics 2013-09-18 Xianfeng Gu , Feng Luo , Jian Sun , Tianqi Wu

We study constant mean curvature surfaces in the three-dimensional Heisenberg group. We prove that a constant mean curvature surface in a neighborhood of non-umbilic point is described by some solution of a sinh-Gordon equation subject to a…

Differential Geometry · Mathematics 2025-01-16 Dmitry Berdinsky

With the developments of the last decade on complete constant mean curvature 1 (CMC 1) surfaces in the hyperbolic 3-space $H^3$, many examples of such surfaces are now known. However, most of the known examples have regular ends. (An end is…

Differential Geometry · Mathematics 2008-05-27 Wayne Rossman , Masaaki Umehara , Kotaro Yamada

We develop a unified and easy to use framework to study robust fully discrete numerical methods for nonlinear degenerate diffusion equations $$ \partial_t u-\mathfrak{L}^{\sigma,\mu}[\varphi(u)]=f \quad\quad\text{in}\quad\quad…

Numerical Analysis · Mathematics 2019-06-20 Félix del Teso , Jørgen Endal , Espen R. Jakobsen

We construct minimal surfaces in hyperbolic and anti-de Sitter 3-space with the topology of a $n$-punctured sphere by loop group factorization methods. The end behavior of the surfaces is based on the asymptotics of Delaunay-type surfaces,…

Differential Geometry · Mathematics 2019-09-11 Alexander I. Bobenko , Sebastian Heller , Nicholas Schmitt

A family of embedded rotationally symmetric tori in the Euclidean 3-space consisting of two opposite signed constant mean curvature surfaces that converge as varifolds to a double round sphere is constructed. Using complete elliptic…

Differential Geometry · Mathematics 2022-06-01 Christian Scharrer

We derive the asymptotic expansion at infinity for embedded ends of uniformly elliptic Weingarten surfaces with finite total curvature in $\mathbb{R}^3$, and we establish a maximum principle at infinity. Furthermore, we solve the Dirichlet…

Differential Geometry · Mathematics 2026-02-17 Aires E. M. Barbieri , José A. Gálvez , Yuanyuan Lian , Kai Zhang

We show that constant mean curvature hypersurfaces in $\mathbb H^n\times\mathbb R$, with small and pinched boundary contained in a horizontal slice $P$ are topological disks, provided they are contained in one of the two halfspaces…

Differential Geometry · Mathematics 2021-10-11 Barbara Nelli , Giuseppe Pipoli

We consider the problem of maintaining the Euclidean Delaunay triangulation $\DT$ of a set $P$ of $n$ moving points in the plane, along algebraic trajectories of constant description complexity. Since the best known upper bound on the…

Computational Geometry · Computer Science 2015-03-19 Pankaj K. Agarwal , Jie Gao , Leonidas J. Guibas , Haim Kaplan , Vladlen Koltun , Natan Rubin , Micha Sharir

We introduce the notion of an asymptotically Poincar\'e family of surfaces in an end of a quasi-Fuchsian manifold. We show that any such family gives a foliation of an end by asymptotically parallel convex surfaces, and that the asymptotic…

Differential Geometry · Mathematics 2019-08-02 Keaton Quinn

In \cite{Wu22}, under the uniformly acute condition, Wu showed the rigidity of the geodesic triangulated plane under Luo's discrete conformality. In this article, by modifying Wu's proof, we improve this result by weakening the uniformly…

Geometric Topology · Mathematics 2022-08-09 Song Dai