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There is constructed, for each member of a one-parameter family of cosmological models, which is obtained from the Kottler-Schwarzschild-de Sitter spacetime by identification under discrete isometries, a slicing by spherically symmetric…

General Relativity and Quantum Cosmology · Physics 2009-11-11 Robert Beig , J. Mark Heinzle

We develop a conservation law for constant mean curvature (CMC) surfaces introduced by Korevaar, Kusner and Solomon, and provide a converse, so as to characterize CMC surfaces by a conservation law. We work with `twizzler' construction,…

Differential Geometry · Mathematics 2011-10-06 Nick Edelen

We prove that every closed, smooth $n$-manifold $X$ admits a Riemannian metric together with a smooth, transversely oriented CMC foliation if and only if its Euler characteristic is zero, where by CMC foliation we mean a codimension-one,…

Differential Geometry · Mathematics 2015-04-10 William H. Meeks , Joaquin Perez

Inspired by a parabolic system of Li-Yuan-Zhang and the continuity equation of La Nave-Tian, we study a system of elliptic equations for a K\"ahler metric $\omega$ and a closed $(1, 1)$-form $\alpha$. Assuming a uniform estimate for…

Differential Geometry · Mathematics 2026-01-13 Xi Sisi Shen , Kevin Smith

There are many non-trivial entire spacelike graphs with constant mean curvature $H$ (CMC $H$, for short) in the isotropic 3-space $\mathbb{I}^3$. In this paper, we show a value distribution theorem of Gaussian curvature of complete…

Differential Geometry · Mathematics 2025-06-02 Shintaro Akamine , Wonjoo Lee , Seong-Deog Yang

It is known that complex constant mean curvature ({\sc CMC} for short) immersions in $\mathbb C^3$ are natural complexifications of {\sc CMC}-immersions in $\mathbb R^3$. In this paper, conversely we consider {\it real form surfaces} of a…

Differential Geometry · Mathematics 2012-03-09 Shimpei Kobayashi

Given $\varepsilon_0>0$, $I\in \mathbb{N}\cup \{0\}$ and $K_0,H_0\geq0$, let $X$ be a complete Riemannian $3$-manifold with injectivity radius $\mbox{Inj}(X)\geq \varepsilon_0$ and with the supremum of absolute sectional curvature at most…

Differential Geometry · Mathematics 2023-03-28 William H. Meeks , Joaquin Perez

We study the global behavior of (weakly) stable constant mean curvature hypersurfaces in general Riemannian manifolds. By using harmonic function theory, we prove some one-end theorems which are new even for constant mean curvature…

Differential Geometry · Mathematics 2007-05-23 Xu Cheng , Leung-fu Cheung , Detang Zhou

In this article we survey recent developments in the theory of constant mean curvature surfaces in homogeneous 3-manifolds, as well as some related aspects on existence and descriptive results for $H$-laminations and CMC foliations of…

Differential Geometry · Mathematics 2016-05-10 William H. Meeks , Joaquin Perez , Giuseppe Tinaglia

We establish a new CMC (constant mean curvature) existence result for cosmological spacetimes, i.e., globally hyperbolic spacetimes with compact Cauchy surfaces satisfying the strong energy condition. If the spacetime contains an expanding…

Differential Geometry · Mathematics 2026-02-17 Gregory J. Galloway , Eric Ling

We investigate CMC-surfaces with periodic metric in a dressing orbit of the cylinder. It is shown, that such surfaces are always of finite type. Using the periodicity conditions for the extended frame of a CMC-surface, we develop an…

dg-ga · Mathematics 2008-02-03 Josef Dorfmeister , Guido Haak

The techniques developed by Butscher in arXiv:math/0703469 for constructing constant mean curvature (CMC) hypersurfaces in the (n+1)-sphere by gluing together spherical building blocks are generalized to handle less symmetric initial…

Differential Geometry · Mathematics 2007-07-16 Adrian Butscher

We obtain height, gradient, and curvature a priori estimates for a modified mean curvature flow in Riemannian manifolds endowed with a Killing vector field. As a consequence, we prove the existence of smooth, entire, longtime solutions for…

Differential Geometry · Mathematics 2026-02-13 Jocel Faustino Norberto de Oliveira , Jorge Herbert Soares de Lira , Matheus Nunes Soares

We establish curvature inequalities and rigidity results for surfaces satisfying constant mean curvature type conditions in both Riemannian and Lorentzian geometry. In the Riemannian setting we study constant mean curvature (CMC) surfaces…

Differential Geometry · Mathematics 2026-03-18 Alejandro Peñuela Diaz

It is proved that the holomorphic quadratic differential associated to CMC surfaces in Riemannian products $\mathbb{S}^2\times\Rr$ and $\mathbb{H}^2\times \Rr$ discovered by U. Abresch and H. Rosenberg could be obtained as a linear…

Differential Geometry · Mathematics 2007-05-23 Marcos P. de A. Cavalcante , Jorge H. S. de Lira

We first prove a general gluing theorem which creates new nondegenerate constant mean curvature surfaces by attaching half Delaunay surfaces with small necksize to arbitrary points of any nondegenerate CMC surface. The proof uses the method…

Differential Geometry · Mathematics 2007-05-23 Rafe Mazzeo , Frank Pacard , Dan Pollack

In this paper, we prove gap results for constant mean curvature (CMC) surfaces. Firstly, we find a natural inequality for CMC surfaces which imply convexity for distance function. We then show that if $\Sigma$ is a complete, properly…

Differential Geometry · Mathematics 2023-01-31 Ezequiel Barbosa , Marcos P. Cavalcante , Edno Pereira

The first author studied spacelike constant mean curvature one (CMC-1) surfaces in de Sitter 3-space when the surfaces have no singularities except within some compact subset and are of finite total curvature on the complement of this…

Differential Geometry · Mathematics 2009-12-25 Shoichi Fujimori , Wayne Rossman , Masaaki Umehara , Kotaro Yamada , Seong-Deog Yang

Let $M\subset\mathbb{R}^3$ be a properly embedded, connected, complete surface with boundary a convex planar curve $C$, satisfying an elliptic equation $H=f(H^2-K)$, where $H$ and $K$ are the mean and the Gauss curvature respectively -…

Differential Geometry · Mathematics 2025-10-07 Angelo Benedetti

This work develops a symplectic framework for quantum computing to be applied to classical Hamiltonian systems, exploiting the intrinsic geometric compatibility between unitary quantum evolution and symplectic phase-space dynamics in a…