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We prove a linear upper bound on the Morse index of closed constant mean curvature (CMC) surfaces in orientable three-manifolds in terms of genus, number of branch points and a Willmore-type energy.

Differential Geometry · Mathematics 2026-02-02 Luca Seemungal , Ben Sharp

In this paper, we consider compact free boundary constant mean curvature surfaces immersed in a mean convex body of the Euclidean space or in the unit sphere. We prove that the Morse index is bounded from below by a linear function of the…

Differential Geometry · Mathematics 2020-03-18 Marcos P. Cavalcante , Darlan F. de Oliveira

Using the local picture of the degeneration of sequences of minimal surfaces developed by Chodosh, Ketover and Maximo we show that in any closed Riemannian 3-manifold $(M,g)$, the genus of an embedded CMC surface can be bounded only in…

Differential Geometry · Mathematics 2021-05-26 Artur B. Saturnino

On a finite-volume hyperbolic $3$-manifold, we establish an upper bound on the area of closed embedded surfaces with constant mean curvature at least one, depending on the mean curvature and the genus bounds. This area bound implies…

Differential Geometry · Mathematics 2025-09-15 Ruojing Jiang

We will discuss some sharp estimates for CMC graphs in a Riemannian 3-manifold MxR whose boundary is contained in a slice. We will start by giving sharp lower bounds for the geodesic curvature of the boundary and improve these bounds when…

Differential Geometry · Mathematics 2014-11-25 José M. Manzano

We show the existence of constant mean curvature surfaces in the homology classes of closed 3-manifolds.

Differential Geometry · Mathematics 2020-01-03 Baris Coskunuzer

We extend the estimate obtained in [1] for the mean curvature of a cylindrically bounded proper submanifold in a product manifold with an Euclidean space as one factor to a general product ambient space endowed with a warped product…

Differential Geometry · Mathematics 2011-07-08 Luis J. Alias , Marcos Dajczer

In this paper we prove a compactness theorem for constant mean curvature surfaces with area and genus bound in three manifold with positive Ricci curvature. As an application, we give a lower bound of first eigenvalue of constant mean…

Differential Geometry · Mathematics 2020-05-06 Ao Sun

In this note we consider asymptotically flat manifolds with non-negative scalar curvature and an inner boundary which is an outermost minimal surface. We show that there exists an upper bound on the mean curvature of a constant mean…

Differential Geometry · Mathematics 2007-12-21 Jan Metzger

We show that the index of a constant mean curvature 1 surface in hyperbolic 3-space is completely determined by the compact Riemann surface and secondary Gauss map that represent it in Bryant's Weierstrass representation. We give three…

Differential Geometry · Mathematics 2008-07-01 Levi Lopes de Lima , Wayne Rossman

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

We establish the existence of a non-trivial, branched immersion of a closed Riemann surface $\Sigma$ with constant mean curvature (CMC) $H$ into any closed, orientable 3-manifold $\mathcal{M}$, for almost every prescribed value of $H$. The…

Differential Geometry · Mathematics 2026-02-20 Filippo Gaia , Xuanyu Li

In this paper we investigate the connection between the index and the geometry and topology of capillary surfaces. We prove an index estimate for compact capillary surfaces immersed in general 3-manifolds with boundary. We also study…

Differential Geometry · Mathematics 2021-11-10 Han Hong , Artur B. Saturnino

We prove that the index of a CMC surface with capillary boundary is bounded from above linearly by its genus, number of boundary components, and branching order, and also by some Willmore-type energy involving the area, mean curvature,…

Differential Geometry · Mathematics 2026-03-20 Luca Seemungal

In 1968, Simons introduced the concept of index for hypersurfaces immersed into the Euclidean sphere S^{n+1}. Intuitively, the index measures the number of independent directions in which a given hypersurface fails to minimize area. The…

Differential Geometry · Mathematics 2009-01-29 E. Colberg , A. M. de Jesus , K. Kinneberg , G. Silva Neto

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 prove qualitative estimates on the total curvature of closed minimal hypersurfaces in closed Riemannian manifolds in terms of their index and area, restricting to the case where the hypersurface has dimension less than seven. In…

Differential Geometry · Mathematics 2021-10-14 Reto Buzano , Ben Sharp

We study the rigidity of complete, embedded constant mean curvature surfaces in R^3. Among other things, we prove that when such a surface has finite genus, then intrinsic isometries of the surface extend to isometries of R^3 or its…

Differential Geometry · Mathematics 2008-01-23 William H. Meeks , Giuseppe Tinaglia

Given a mean curvature flow of compact, embedded $C^2$ surfaces satisfying Neumann free boundary condition on a mean convex, smooth support surface in 3-dimensional Euclidean space, we show that it can be extended as long as its mean…

Differential Geometry · Mathematics 2018-07-10 Siao-Hao Guo

This paper develops a technique for applying one-parameter prescribed mean curvature min-max theory in certain non-compact manifolds. We give two main applications. First, fix a dimension $3\le n+1 \le 7$ and consider a smooth function…

Differential Geometry · Mathematics 2022-04-18 Liam Mazurowski
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