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Eight different refinements of trapped surfaces are proposed, of three basic types, each intended as potential stability conditions. Minimal trapped surfaces are strictly minimal with respect to the dual expansion vector. Outer trapped…

General Relativity and Quantum Cosmology · Physics 2011-03-28 Sean A. Hayward

This is a preliminary note on a family of minimal surfaces in the 3-sphere defined by a compatible fourth order equation. The minimal surfaces are geometrically characterized either by having a surface of revolution like induced metric, or…

Differential Geometry · Mathematics 2013-10-17 Joe S. Wang

We give necessary and sufficient topological conditions for a simple closed curve on a real rational surface to be approximable by smooth rational curves. We also study approximation by smooth rational curves with given complex…

Algebraic Geometry · Mathematics 2025-05-26 János Kollár , Frédéric Mangolte

A class of spiral minimal surfaces in E^3 is constructed using a symmetry reduction. The new surfaces are invariant with respect to the composition of rotation and dilatation. The solutions are obtained in closed form %through the Legendre…

Differential Geometry · Mathematics 2008-02-15 A. V. Kiselev , V. I. Varlamov

In this paper we present an algorithm to reduce the area of a surface spanned by a finite number of boundary curves by initiating a variational improvement in the surface. The ansatz we suggest consists of original surface plus a…

Differential Geometry · Mathematics 2014-02-24 Daud Ahmad , Bilal Masud

We discuss how Dokken's methods of approximate implicitization can be applied to triangular B\'ezier surfaces in both the original and weak forms. The matrices $\mathbf{D}$ and $\mathbf{M}$ that are fundamental to the respective forms of…

Numerical Analysis · Mathematics 2017-07-06 Oliver J. D. Barrowclough , Tor Dokken

We study real trigonal curves and elliptic surfaces of type $\I$ (over a base of an arbitrary genus) and their fiberwise equivariant deformations. The principal tool is a real version of Grothendieck's \emph{dessins d'enfants}. We give a…

Algebraic Geometry · Mathematics 2014-06-06 Alex Degtyarev , Ilia Itenberg , Victor Zvonilov

Schwartz's solution to the Bj\"orling problem leads to an equivalence class of spatial strips S(t)=(c(t),n(t)) which produce equivalent minimal surfaces. For the particular case when the generating strip S(t) belongs to some plane E and…

Differential Geometry · Mathematics 2011-12-12 Hugo Jiménez-Pérez , Santiago López de Medrano

A very interesting problem in the classical theory of minimal surfaces consists of the classification of such surfaces under some geometrical and topological constraints. In this short paper, we give a brief summary of the known…

Differential Geometry · Mathematics 2007-05-23 M. Magdalena Rodriguez

We are interested in generating surfaces with arbitrary roughness and forming patterns on the surfaces. Two methods are applied to construct rough surfaces. In the first method, some superposition of wave functions with random frequencies…

Numerical Analysis · Mathematics 2024-01-12 Siqing Li , Leevan Ling , Steven J. Ruuth , Xuemeng Wang

A minimal family of curves on an embedded surface is defined as a 1-dimensional family of rational curves of minimal degree, which cover the surface. We classify such minimal families using constructive methods. This allows us to compute…

Algebraic Geometry · Mathematics 2021-03-09 Niels Lubbes

This paper is about interpolating minimal surfaces between two real analytic curves, a and b, each of which are simple real analytic curves, using the Bj\"{o}rling-Schwarz formula in the domain where it is valid, changing the normal…

Differential Geometry · Mathematics 2013-02-19 Rukmini Dey

Generalized Burniat surfaces are surfaces of general type with $p_g=q$ and Euler number $e=6$ obtained by a variant of Inoue's construction method for the classical Burniat surfaces. I prove a variant of the Bloch conjecture for these…

Algebraic Geometry · Mathematics 2017-10-09 Chris Peters

For each integer m>1 and l>0 we construct a pair of compact embedded minimal surfaces of genus 1+4m(m-1)l. These surfaces desingularize the m Clifford tori meeting each other along a great circle at the angle of \pi/m. They are invariant…

Differential Geometry · Mathematics 2013-04-12 Jaigyoung Choe , Marc Soret

In this paper, we employ the loop group method to study the construction of minimal Lagrangian surfaces in the complex projective plane for which the surface is contractible. We present several new classes of minimal Lagrangian surfaces in…

Differential Geometry · Mathematics 2021-02-03 Josef F. Dorfmeister , Hui Ma

We prove that given a three manifold with an arbitrary metric $(M^3, g)$ of positive Ricci curvature, there exists a sweepout of $M$ by surfaces of genus $\leq 3$ and areas bounded by $C vol(M^3, g)^{2/3}$. We use this result to construct a…

Differential Geometry · Mathematics 2016-05-27 Yevgeny Liokumovich , Xin Zhou

Special class of surfaces in five-dimensional sphere in $C^3$ is considered. Immersion equations for minimal tori of that class are shown to be reducible to the equation $u_{z\bar z}=e^u-e^{-2u}$ which is integrable by means of inverse…

Differential Geometry · Mathematics 2007-05-23 Ruslan Sharipov

We develop a numerical method for the computation of a minimal convex and compact set, $\mathcal{B}\subset\mathbb{R}^N$, in the sense of mean width. This minimisation is constrained by the requirement that $\max_{b\in\mathcal{B}}\langle b ,…

Numerical Analysis · Mathematics 2024-03-12 Åsmund Hausken Sande , Johan S. Wind

Computing a quasi-developable strip surface bounded by design curves finds wide industrial applications. Existing methods compute discrete surfaces composed of developable lines connecting sampling points on input curves which are not…

Graphics · Computer Science 2022-12-19 Pengbo Bo , Yujian Zheng , Caiming Zhang

We study of the shape of a compact singular minimal surface in terms of the geometry of its boundary, asking what type of {\it a priori} information can be obtained on the surface from the knowledge of its boundary. We derive estimates of…

Differential Geometry · Mathematics 2019-12-18 Rafael López