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We prove a Simons type equation for non-minimal surfaces with parallel mean curvature vector (pmc surfaces) in $M^n(c)\times\mathbb{R}$, where $M^n(c)$ is an $n$-dimensional space form. Then, we use this equation in order to characterize…

微分几何 · 数学 2011-02-03 Dorel Fetcu , Harold Rosenberg

We use a Simons type equation in order to characterize complete non-minimal pmc surfaces with non-negative Gaussian curvature.

微分几何 · 数学 2011-02-17 Dorel Fetcu , Harold Rosenberg

We prove a Simons type formula for submanifolds with parallel mean curvature vector field in product spaces of type $M^n(c)\times\mathbb{R}$, where $M^n(c)$ is a space form with constant sectional curvature $c$, and then we use it to…

微分几何 · 数学 2011-12-16 Dorel Fetcu , Harold Rosenberg

We find a Simons type formula for submanifolds with parallel mean curvature vector (pmc submanifolds) in product spaces $M^n(c)\times\mathbb{R}$, where $M^n(c)$ is a space form with constant sectional curvature $c$, and then we use it to…

微分几何 · 数学 2011-09-29 Dorel Fetcu , Cezar Oniciuc , Harold Rosenberg

We determine all helix surfaces with parallel mean curvature vector field, which are not minimal or pseudo-umbilical, in spaces of type $M^n(c)\times\mathbb{R}$, where $M^n(c)$ is a simply-connected $n$-dimensional manifold with constant…

微分几何 · 数学 2015-06-18 Dorel Fetcu

We consider surfaces with parallel mean curvature vector field and finite total curvature in product spaces of type $\mathbb{M}^n(c)\times\mathbb{R}$, where $\mathbb{M}^n(c)$ is a space form, and characterize certain of these surfaces. When…

微分几何 · 数学 2016-06-22 Márcio Batista , Marcos P. Cavalcante , Dorel Fetcu

We consider surfaces with parallel mean curvature vector (pmc surfaces) in $\mathbb{C}P^n\times\mathbb{R}$ and $\mathbb{C}H^n\times\mathbb{R}$, and, more generally, in cosymplectic space forms. We introduce a holomorphic quadratic…

微分几何 · 数学 2010-11-23 Dorel Fetcu , Harold Rosenberg

We classify non-minimal biconservative surfaces with parallel mean curvature vector field in $\mathbb{S}^n\times\mathbb{R}$ and $\mathbb{H}^n\times\mathbb{R}$. When these surfaces do not lie in $\mathbb{S}^n$ or $\mathbb{H}^n$ and they are…

微分几何 · 数学 2014-08-26 Dorel Fetcu , Cezar Oniciuc , Ana Lucia Pinheiro

In this paper, we prove that PMCV (i.e. \Delta\vec{H} is proportional to \vec{H}) hypersurface M^n_r of a non-flat pseudo-Riemannian space form N^{n+1}_s(c) with at most two distinct principal curvatures is minimal or locally isoparametric,…

微分几何 · 数学 2024-03-14 Chao Yang , Jiancheng Liu , Li Du

In this article we study surfaces in $\mathbb{S}^3(1) \times \mathbb{R}$ for which the $\mathbb{R}$-direction makes a constant angle with the normal plane. We give a complete classification for such surfaces with parallel mean curvature…

微分几何 · 数学 2011-05-04 Daguang Chen , Gangyi Chen , Hang Chen , Franki Dillen

We determine a Simons' type formula for spacelike submanifolds within a broad class of semiRiemannian warped products. This formula extends the Simons' type formulas initially introduced by Nomizu and Smyth in 1969 for constant mean…

微分几何 · 数学 2023-12-19 Guillermo A. Lobos , Mynor Melara , Maria R. B. Santos

We present a reduction of codimension theorem for surfaces with parallel mean curvature in symmetric spaces.

微分几何 · 数学 2015-05-27 M. J. Ferreira , R. Tribuzy

In this article we consider PMC surfaces in complex space forms, and we study the interaction between the notions of PMC, totally real and biconservative. We first consider PMC surfaces in non-flat complex space forms and we prove that they…

微分几何 · 数学 2021-07-27 Hiba Bibi , Bang-Yen Chen , Dorel Fetcu , Cezar Oniciuc

In this work, we obtain a geometric description of surfaces $M^2$ of arbitrary codimension in the warped product $\mathbb{R}\times_\rho\mathbb{Q}^n_\epsilon$, with parallel mean curvature vector field in the normal connection, extending a…

微分几何 · 数学 2026-03-03 Fernando Manfio , Verônica Reis , Feliciano Vitório

We describe local similarities and global differences between minimal surfaces in Euclidean 3-space and constant mean curvature 1 surfaces in hyperbolic 3-space. We also describe how to solve global period problems for constant mean…

微分几何 · 数学 2008-04-29 Wayne Rossman

We investigate surfaces with constant harmonic-mean curvature one (HMC-1 surfaces) in hyperbolic three-space. We allow them to have certain kinds of singularities, and discuss some global properties. As well as flat surfaces and surfaces…

微分几何 · 数学 2007-05-23 Masatoshi Kokubu

We review recent results on classifying complete constant mean curvature 1 (CMC 1) surfaces in hyperbolic 3-space with low total curvature. There are two natural notions of "total curvature" -- one is the total absolute curvature, which is…

微分几何 · 数学 2009-08-03 Wayne Rossman , Masaaki Umehara , Kotaro Yamada

We examine the space of surfaces in $\RR^{3}$ which are complete, properly embedded and have nonzero constant mean curvature. These surfaces are noncompact provided we exclude the case of the round sphere. We prove that the space $\Mk$ of…

dg-ga · 数学 2008-02-03 Rob Kusner , Rafe Mazzeo , Daniel Pollack

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…

微分几何 · 数学 2021-10-11 Barbara Nelli , Giuseppe Pipoli

We survey our recent results on classifying complete constant mean curvature 1 (CMC-1) surfaces in hyperbolic 3-space with low total curvature. There are two natural notions of "total curvature"-- one is the total absolute curvature which…

微分几何 · 数学 2009-08-03 Wayne Rossman , Masaaki Umehara , Kotaro Yamada
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