Results 1 to 10 of about 44 (44)

Graphs with constant mean curvature in the 3-hyperbolic space

open access: yesAnais da Academia Brasileira de Ciências, 2002
In this work we will deal with disc type surfaces of constant mean curvature in the three dimensional hyperbolic space which are given as graphs of smooth functions over planar domains.
PEDRO A. HINOJOSA
doaj   +1 more source

Constant mean curvature one surfaces in hyperbolic 3-space using the Bianchi-Calò method

open access: yesAnais da Academia Brasileira de Ciências, 2002
In this note we present a method for constructing constant mean curvature on surfaces in hyperbolic 3-space in terms of holomorphic data first introduced in Bianchi's Lezioni di Geometria Differenziale of 1927, therefore predating by many years the ...
LEVI L. DE LIMA, PEDRO ROITMAN
doaj   +1 more source

Fundamental tone estimates for elliptic operators in divergence form and geometric applications

open access: yesAnais da Academia Brasileira de Ciências, 2006
We establish a method for giving lower bounds for the fundamental tone of elliptic operators in divergence form in terms of the divergence of vector fields.
Gregório P. Bessa   +3 more
doaj   +1 more source

Constant mean curvature surfaces with circular boundary in R³

open access: yesAnais da Academia Brasileira de Ciências, 2006
In this work we deal with surfaces immersed in R³ with constant mean curvature and circular boundary. We improve some global estimates for area and volume of such immersions obtained by other authors.
Pedro A. Hinojosa
doaj   +1 more source

A relation between the right triangle and circular tori with constant mean curvature in the unit 3-sphere

open access: yesAnais da Academia Brasileira de Ciências, 2004
In this note we will show that the inverse image under the stereographic projection of a circular torus of revolution in the 3-dimensional euclidean space has constant mean curvature in the unit 3-sphere if and only if their radii are the catet and the ...
Abdênago Barros
doaj   +1 more source

Minimal surfaces in euclidean 3-space and their mean curvature 1 cousins in hyperbolic 3-space

open access: yesAnais da Academia Brasileira de Ciências, 2003
We show that the Hopf differentials of a pair of isometric cousin surfaces, a minimal surface in euclidean 3-space and a constant mean curvature (CMC) one surface in the 3-dimensional hyperbolic space, with properly embedded annular ends, extend ...
Shoichi Fujimori
doaj   +1 more source

On Ribaucour transformations and applications to linear Weingarten surfaces

open access: yesAnais da Academia Brasileira de Ciências, 2002
We present a revised definition of a Ribaucour transformation for submanifolds of space forms, with flat normal bundle, motivated by the classical definition and by more recent extensions.
KETI TENENBLAT
doaj   +1 more source

Comparative Analysis Between Isolated Posterior and Anteroposterior Approaches for Severe Scoliosis Treatment. [PDF]

open access: yesRev Bras Ortop (Sao Paulo), 2023
Verde SRL   +6 more
europepmc   +1 more source

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