Relative parabolicity of zero mean curvature surfaces in R 3 and R 31
نویسندگان
چکیده
If the Lorentzian norm on a maximal surface in the 3-dimensional Lorentz-Minkowski space R 1 is positive and proper, then the surface is relative parabolic. As a consequence, entire maximal graphs with a closed set of isolated singularities are relative parabolic. Furthermore, maximal and minimal graphs over closed starlike domains in R 1 and R, respectively, are relative parabolic.
منابع مشابه
Hyperbolic surfaces of $L_1$-2-type
In this paper, we show that an $L_1$-2-type surface in the three-dimensional hyperbolic space $H^3subset R^4_1$ either is an open piece of a standard Riemannian product $ H^1(-sqrt{1+r^2})times S^{1}(r)$, or it has non constant mean curvature, non constant Gaussian curvature, and non constant principal curvatures.
متن کاملExperimental Evidence for Maximal Surfaces in a 3 Dimensional Minkowski Space
Conventional physical dogma, justified by the local success of Newtonian dynamics for particles, assigns a Euclidean metric with signature (plus, plus, plus) to the three spatial dimensions. Minimal surfaces are of zero mean curvature and negative Gauss curvature in a Euclidean space, which supports affine evolutionary processes. However, experimental evidence now indicates that the non-affine ...
متن کاملBifurcating Nodoids
All complete, axially symmetric surfaces of constant mean curvature in R lie in the one-parameter family Dτ of Delaunay surfaces. The elements of this family which are embedded are called unduloids; all other elements, which correspond to parameter value τ ∈ R, are immersed and are called nodoids. The unduloids are stable in the sense that the only global constant mean curvature deformations of...
متن کاملSpacelike Mean Curvature 1 Surfaces of Genus 1 with Two Ends in De Sitter 3-space
We give a mathematical foundation for, and numerical demonstration of, the existence of mean curvature 1 surfaces of genus 1 with either two elliptic ends or two hyperbolic ends in de Sitter 3-space. An end of a mean curvature 1 surface is an “elliptic end” (resp. a “hyperbolic end”) if the monodromy matrix at the end is diagonalizable with eigenvalues in the unit circle (resp. in the reals). A...
متن کاملBerry curvature and energy bands of graphene
In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors obtained by tight binding model. By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized. With this Hamiltonian, the band structure and wave function can be calculated. By using calculated wave f...
متن کامل