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In this paper we investigate $m$-dimensional complete minimal submanifolds in Euclidean spheres with index of relative nullity at least $m-2$ at any point. These are austere submanifolds in the sense of Harvey and Lawson \cite{harvey} and…

微分几何 · 数学 2017-07-10 M. Dajczer , Th. Kasioumis , A. Savas-Halilaj , Th. Vlachos

We first consider a uniqueness problem for embedded free boundary minimal annuli in the three-dimensional Euclidean unit half-ball. Then, we obtain symmetry properties for compact embedded free boundary minimal surfaces in the unit ball.…

微分几何 · 数学 2023-01-13 Dong-Hwi Seo

We classify minimal finite models of the M\"{o}bius band and several wedge sums of spheres. In particular, we show that the minimal finite model of the M\"{o}bius band coincides with that of the circle $S^{1}$. Furthermore, we prove that…

代数拓扑 · 数学 2025-11-18 Ponaki Das , Sainkupar Marwein Mawiong

We show that in a closed 3-manifold with a generic metric of positive Ricci curvature, there are minimal surfaces of arbitrary large Morse index, which partially confirms a conjecture by F. Marques and A. Neves. We prove this by analyzing…

微分几何 · 数学 2016-05-25 Haozhao Li , Xin Zhou

We prove a local splitting theorem for three-manifolds with mean convex boundary and scalar curvature bounded from below that contain certain locally area-minimizing free boundary surfaces. Our methods are based on those of Micallef and…

微分几何 · 数学 2013-09-04 Lucas C. Ambrozio

We prove the validity of an inequality involving a mean of the area and the length of the boundary of immersed disks whose boundaries are homotopically non-trivial curves in an oriented compact manifold which possesses convex mean curvature…

微分几何 · 数学 2021-04-08 Ezequiel Barbosa , Franciele Conrado

Let $M$ be a smooth connected orientable compact surface. Denote by $F(M,S^1)$ the space of all Morse functions $f:M\to S^1$ having no critical points on the boundary of $M$ and such that for every boundary component $V$ of $M$ the…

几何拓扑 · 数学 2015-12-25 Sergiy Maksymenko

This work investigates upper bounds for the spectrum of the Steklov-type operator on Riemannian manifolds with boundary. We extend the Fraser-Schoen estimate for the first positive Steklov eigenvalue to higher Steklov eigenvalues, in terms…

微分几何 · 数学 2026-01-29 Tiarlos Cruz , Leandro F. Pessoa , Erisvaldo Véras

We prove that orientable index one minimal surfaces in spherical space forms with large fundamental group have genus at most two. This confirms a conjecture of R. Schoen for an infinite class of 3-manifolds.

微分几何 · 数学 2018-12-06 Celso Viana

We prove that the index is bounded from below by a linear function of its first Betti number for any compact free boundary $f$-minimal hypersurface in certain positively curved weighted manifolds.

微分几何 · 数学 2022-03-22 Niang Chen , Jianquan Ge , Miaomiao Zhang

Consider a domain D in R^3 which is convex (possibly all R^3) or which is smooth and bounded. Given any open surface M, we prove that there exists a complete, proper minimal immersion f : M --> D. Moreover, if D is smooth and bounded, then…

微分几何 · 数学 2009-03-26 Leonor Ferrer , Francisco Martin , William H. Meeks

The author proves that there is an open non empty set of metrics on any 3-manifold such that there exists a family of stably embedded minimal 2-spheres whose area is unbounded. This generalizes the work of T. Colding and W. Minicozzi who…

微分几何 · 数学 2009-09-10 Joel I. Kramer

In the Euclidean unit three-ball, we construct compact, embedded, two-sided free boundary minimal surfaces with connected boundary and prescribed high genus, by a gluing construction tripling the equatorial disc. Aside from the equatorial…

微分几何 · 数学 2017-12-29 Nicolaos Kapouleas , David Wiygul

In this paper, we mainly consider the relative isoperimetric inequalities for minimal submanifolds with free boundary. We first generalize ideas of restricted normal cones introduced by Choe-Ghomi-Ritor\'e in \cite{CGR06} and obtain an…

微分几何 · 数学 2024-03-29 Lei Liu , Guofang Wang , Liangjun Weng

We construct a countable collection of one-parameter families of non-rotational minimal annuli with free boundary in geodesic balls of hyperbolic 3-space. Every surface within a given family shares a common prismatic symmetry group, and…

微分几何 · 数学 2025-02-28 Alberto Cerezo

We consider the linear water-wave problem in a periodic channel which consists of infinitely many identical containers connected with apertures of width $\epsilon$. Motivated by applications to surface wave propagation phenomena, we study…

谱理论 · 数学 2013-12-19 Fedor Bakharev , Keijo Ruotsalainen , Jari Taskinen

We present a general construction of embedded minimal and constant mean curvature surfaces in $\mathbb{S}^n$ and one-phase free boundaries joined by a smooth interpolation by capillary hypersurfaces. This framework recovers all known…

微分几何 · 数学 2026-04-07 Benjy Firester , Raphael Tsiamis

Let M be a compact Riemannian manifold with boundary. Let b>0 be the number of connected components of its boundary. For manifolds of dimension at least 3, we prove that it is possible to obtain an arbitrarily large (b+1)-th Steklov…

谱理论 · 数学 2018-10-16 Bruno Colbois , Ahmad El Soufi , Alexandre Girouard

We show that metrics that maximize the k-th Steklov eigenvalue on surfaces with boundary arise from free boundary minimal surfaces in the unit ball. We prove several properties of the volumes of these minimal submanifolds. For free boundary…

微分几何 · 数学 2013-04-04 Ailana Fraser , Richard Schoen

We show that a minimal disk satisfying the free boundary condition in a constant curvature ball of any dimension is totally geodesic. We weaken the condition to parallel mean curvature vector in which case we show that the disk lies in a…

微分几何 · 数学 2018-11-28 Ailana Fraser , Richard Schoen