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In this article we present an elementary introduction to the theory of minimal surfaces in Euclidean spaces $\mathbb R^n$ for $n\ge 3$ by using only elementary calculus of functions of several variables at the level of a typical second-year…

Differential Geometry · Mathematics 2021-01-08 Franc Forstneric

In this paper we consider min-max minimal surfaces in three-manifolds and prove some rigidity results. For instance, we prove that any metric on a 3-sphere which has scalar curvature greater than or equal to 6 and is not round must have an…

Differential Geometry · Mathematics 2019-12-19 F. C. Marques , A. Neves

We define the nearly free surfaces in $P^3$ and show that the Hilbert polynomial of the Milnor algebra of a free or nearly free surface in $P^3$ can be expressed in terms of the exponents. An analog of Saito's criterion of freeness in the…

Algebraic Geometry · Mathematics 2019-09-17 Alexandru Dimca , Gabriel Sticlaru

The main goal of this paper is to show a counterexample to the following conjecture: {\bf Conjecture} [Meeks, Sullivan]: If $f:M\to \mathbb{R}^3$ is a complete proper minimal immersion where $M$ is a Riemannian surface without boundary and…

Differential Geometry · Mathematics 2007-05-23 Santiago Morales

We rigorously establish the existence of many free boundary minimal annuli with boundary in a geodesic sphere of $\mathbb{S}^3$. These arise as compact subdomains of a one-parameter family of complete minimal immersions of $\mathbb{R}…

Differential Geometry · Mathematics 2025-11-17 Manuel Ruivo de Oliveira

In this paper we have proved several approximation theorems for the family of minimal surfaces in R^3 that imply, among other things, that complete minimal surfaces are dense in the space of all minimal surfaces endowed with the topology of…

Differential Geometry · Mathematics 2007-05-23 A. Alarcon , L. Ferrer , F. Martin

The boundary of the convex hull of a compact algebraic curve in real 3-space defines a real algebraic surface. For general curves, that boundary surface is reducible, consisting of tritangent planes and a scroll of stationary bisecants. We…

Algebraic Geometry · Mathematics 2011-01-19 Kristian Ranestad , Bernd Sturmfels

This paper is devoted to a study of the connection between the immersion functions of two-dimensional surfaces in Euclidean or hyperbolic spaces and classical orthogonal polynomials. After a brief description of the soliton surfaces…

Mathematical Physics · Physics 2019-12-24 Vincent Chalifour , Alfred Michel Grundland

Let Y be a surface with only finitely many singularities all of which are cusps. A set of cusps on Y is called three-divisible, if there is a cyclic global triple cover of Y branched precisely over these cusps. The aim of this note is to…

Algebraic Geometry · Mathematics 2012-09-25 Wolf P. Barth , Slawomir Rams

We prove a descriptive theorem on the extrinsic geometry of an embedded minimal surface of injectivity radius zero in a homogeneously regular Riemannian three-manifold, in a certain small intrinsic neighborhood of a point of almost-minimal…

Differential Geometry · Mathematics 2016-10-18 William H. Meeks , Joaquin Perez , Antonio Ros

Let $M$ be a complete Riemannian $3$-manifold with sectional curvatures between $0$ and $1$. A minimal $2$-sphere immersed in $M$ has area at least $4\pi$. If an embedded minimal sphere has area $4\pi$, then $M$ is isometric to the unit…

Differential Geometry · Mathematics 2013-11-12 Laurent Mazet , Harold Rosenberg

We show that a 3-manifold containing an incompressible surface has topologically minimal surfaces of arbitrary high genus.

Geometric Topology · Mathematics 2013-01-22 Jung Hoon Lee

We prove lower bounds for the minimum distance of algebraic geometry codes over surfaces whose canonical divisor is either nef or anti-strictly nef and over surfaces without irreducible curves of small genus. We sharpen these lower bounds…

Algebraic Geometry · Mathematics 2020-03-04 Yves Aubry , Elena Berardini , Fabien Herbaut , Marc Perret

Minimal surfaces in the Riemannian product of surfaces of constant curvature have been considered recently, particularly as these products arise as spaces of oriented geodesics of 3-dimensional space-forms. This papers considers more…

Differential Geometry · Mathematics 2024-12-10 Nikos Georgiou , Brendan Guilfoyle

We study compact minimal surfaces in the 3-sphere which are constructed by successive reflections from a minimal $n$-gon -- so-called minimal reflection surfaces. The minimal $n$-gon solves a free boundary problem in a fundamental piece of…

Differential Geometry · Mathematics 2024-06-19 Alexander I. Bobenko , Sebastian Heller , Nicolas Schmitt

Applying Morse theory, we give a standard form for a class of surfaces which includes all the properly embedded incompressible surfaces in 3-dimensional handlebodies. We also give a necessary and sufficient condition to determine the…

Geometric Topology · Mathematics 2022-12-13 Wei Lin , Fengchun Lei

We discuss translation minimal surfaces, homothetical minimal surfaces, and separable minimal surfaces in the $3$-space with $2m$-norm.

Differential Geometry · Mathematics 2024-07-15 Makoto Sakaki , Ryota Tanaka

Since J. L. Lagrange initiated in 1760 the study of minimal surfaces of Euclidean 3-space, minimal surfaces in real space forms have been studied extensively by many mathematicians during the last two and half centuries. In contrast, so far…

Differential Geometry · Mathematics 2013-07-16 Bang-Yen Chen

We establish the lower bound of $4\pi(1+g)$ for the area of the Gauss map of any immersion of a closed oriented surface of genus $g$ into $\mathbb{S}^3$, taking values in the Grassmannian of $2$-planes in $\mathbb{R}^4$. This lower bound is…

Differential Geometry · Mathematics 2025-06-06 Gerard Orriols , Tristan Rivière

It was shown by Ramanathan \cite{R} that any compact oriented non-simply-connected minimal surface in the three-dimensional round sphere admits at most a finite set of pairwise noncongruent minimal isometric immersions. Here we show that…

Differential Geometry · Mathematics 2015-07-15 M. Dajczer , Th. Vlachos