Results 31 to 40 of about 19,178 (296)

Constant mean curvature surfaces into homogeneous manifolds [PDF]

open access: yes, 2020
L'objectif de cette thèse est d'étudier les surfaces à courbure moyenne constante dans des variétés homogènes de dimension 3 avec un groupe d'isométries de dimension 4. Dans la première partie de cette thèse, nous étudions les surfaces à courbure moyenne
Oliveira, Iury Rafael Domingos de
core   +2 more sources

Geometric Study of Marginally Trapped Surfaces in Space Forms and Robertson-Walker Spacetimes—An Overview

open access: yesAxioms, 2020
A marginally trapped surface in a spacetime is a Riemannian surface whose mean curvature vector is lightlike at every point. In this paper we give an up-to-date overview of the differential geometric study of these surfaces in Minkowski, de Sitter, anti ...
Kristof Dekimpe, Joeri Van der Veken
doaj   +1 more source

A general halfspace theorem for constant mean curvature surfaces [PDF]

open access: yes, 2013
3 figuresInternational audienceIn this paper, we prove a general halfspace theorem for constant mean curvature surface. Under certain hypothesis, we prove that, in an ambient space $M^3$, any constant mean curvature $H_0$ surface on one side of a ...
Mazet, Laurent
core   +1 more source

The rigidity of embedded constant mean curvature surfaces [PDF]

open access: yes, 2011
In this paper, we prove rigidity of certain complete surfaces embedded in R-3 with constant mean curvature. We also show that for certain complete surfaces embedded in R-3 with constant mean curvature, intrinsic isometries extend to isometries of R-3 or ...
Tinaglia, Giuseppe; id_orcid   +3 more
core   +1 more source

Surfaces of Constant Curvature in the Pseudo-Galilean Space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
We develop the local theory of surfaces immersed in the pseudo-Galilean space, a special type of Cayley-Klein spaces. We define principal, Gaussian, and mean curvatures.
Željka Milin Šipuš, Blaženka Divjak
doaj   +1 more source

Constant mean curvature surfaces with three ends [PDF]

open access: yesProceedings of the National Academy of Sciences, 2000
We announce the classification of complete almost embedded surfaces of constant mean curvature, with three ends and genus zero. They are classified by triples of points on the sphere whose distances are the asymptotic necksizes of the three ends.
Grosse-Brauckmann, K   +2 more
openaire   +3 more sources

Surfaces of Constant Mean Curvature [PDF]

open access: yes, 2020
U ovome radu ćemo razmatrati pojam ploha konstantne srednje zakrivljenosti te navesti brojne primjere takvih ploha. Osim u diferencijalnoj geometriji, plohe konstantne srednje zakrivljenosti poznate su i u teoriji optimizacije, budući da predstavljaju ...
Kokanović, Karlo
core  

Parabolic stable surfaces with constant mean curvature [PDF]

open access: yes, 2010
We prove that if u is a bounded smooth function in the kernel of a nonnegative Schrödinger operator −L = −( ∆ + q) on a parabolic Riemannian manifold M, then u is either identically zero or it has no zeros on M, and the linear space of such functions is
Rodríguez, Magdalena   +5 more
core   +1 more source

Geometry of CMC surfaces of finite index

open access: yesAdvanced Nonlinear Studies, 2023
Given r0>0{r}_{0}\gt 0, I∈N∪{0}I\in {\mathbb{N}}\cup \left\{0\right\}, and K0,H0≥0{K}_{0},{H}_{0}\ge 0, let XX be a complete Riemannian 3-manifold with injectivity radius Inj(X)≥r0\hspace{0.1em}\text{Inj}\hspace{0.1em}\left(X)\ge {r}_{0} and with the ...
Meeks William H., Pérez Joaquín
doaj   +1 more source

Constant mean curvature surfaces with boundary on a sphere [PDF]

open access: yesApplied Mathematics and Computation, 2013
In this article we study the shape of a compact surface of constant mean curvature of Euclidean space whose boundary is contained in a round sphere. We consider the case that the boundary is prescribed or that the surface meets the sphere with a constant angle. We study under what geometric conditions the surface must be spherical. Our results apply in
Rafael López, Juncheol Pyo
openaire   +2 more sources

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