Results 11 to 20 of about 1,076 (51)

The double bubble problem in spherical and hyperbolic space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 32, Issue 11, Page 641-699, 2002., 2002
We prove that the standard double bubble is the least‐area way to enclose and separate two regions of equal volume in ℍ3, and in S3 when the exterior is at least ten percent of S3.
Andrew Cotton, David Freeman
wiley   +1 more source

On the new approach for the energy of elastica

open access: yesActa Scientiarum: Technology, 2018
In this work, we firstly describe conditions for being elastica in Minkowski space E41. Then we investigate the energy of the elastic curves and exploit its relationship with the energy of Bishop vectors belong to that elastic curves E41.
Talat Körpınar, Rıdvan Cem Demirkol
doaj   +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

Sym-Bobenko formula for minimal surfaces in Heisenberg space [PDF]

open access: yes, 2013
We give an immersion formula, the Sym-Bobenko formula, for minimal surfaces in the 3-dimensional Heisenberg space. Such a formula can be used to give a generalized Weierstrass type representation and construct explicit examples of minimal surfaces ...
Cartier, Sébastien
core   +8 more sources

A boundary value problem in the hyperbolic space

open access: yesAbstract and Applied Analysis, Volume 4, Issue 4, Page 249-253, 1999., 1999
We consider a nonlinear problem for the mean curvature equation in the hyperbolic space with a Dirichlet boundary data g. We find solutions in a Sobolev space under appropriate conditions on g.
P. Amster, G. Keilhauer, M. C. Mariani
wiley   +1 more source

Bifurcation of the equivariant minimal interfaces in a hydromechanics problem

open access: yesAbstract and Applied Analysis, Volume 1, Issue 3, Page 291-304, 1996., 1996
In this work we study a deformation of the minimal interface of two fluids in a vertical tube under the presence of gravitation. We show that a symmetry of the base of tube let us to apply a method developed earlier by the first author and based on the Crandall‐Rabinowitz bifurcation theorem.
A. Y. Borisovich, W. Marzantowicz
wiley   +1 more source

Hyperbolic Unfoldings of Minimal Hypersurfaces

open access: yesAnalysis and Geometry in Metric Spaces, 2018
We study the intrinsic geometry of area minimizing hypersurfaces from a new point of view by relating this subject to quasiconformal geometry. Namely, for any such hypersurface H we define and construct a so-called S-structure.
Lohkamp Joachim
doaj   +1 more source

Null scrolls with prescribed curvatures in Lorentz-Minkowski 3-space

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
In Lorentz-Minkowski 3-space, null scrolls are ruled surfaces with a null base curve and null rulings. Their mean, as well as their Gaussian curvature, depends only on a parameter of a base curve. In the present paper, we obtain the first-order nonlinear
Šipuš Željka Milin   +2 more
doaj   +1 more source

On the umbilic set of immersed surfaces in three-dimensional space forms

open access: yes, 2019
We prove that under some assumptions on the mean curvature the set of umbilical points of an immersed surface in a $3$-dimensional space form has positive measure. In case of an immersed sphere our result can be seen as a generalization of the celebrated
Catino, Giovanni   +2 more
core   +1 more source

Parallel Mean Curvature Surfaces in Symmetric Spaces

open access: yes, 2011
We present a reduction of codimension theorem for surfaces with parallel mean curvature in symmetric ...
H. Alencar   +4 more
core   +1 more source

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