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Related papers: Free boundary minimal disks in convex balls

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We extend Struwe's result (Acta Math., 1988) on the existence of free boundary constant mean curvature disks to almost every prescribed boundary contact angle in $(0, \pi)$. Specifically, let $\Sigma$ be a surface in $\mathbb{R}^3$…

Differential Geometry · Mathematics 2023-10-13 Da Rong Cheng

In this paper, we develop a general existence theory for properly embedded minimal surfaces with free boundary in any compact Riemannian 3-manifold $M$ with boundary $\partial M$. The main feature of our result is that no convexity…

Differential Geometry · Mathematics 2020-01-06 Martin Li

We prove that there exists, in every dimension, a unique (modulo rotations about the origin and time translations) convex ancient mean curvature flow in the ball with free boundary on the sphere.

Differential Geometry · Mathematics 2022-04-15 Theodora Bourni , Mat Langford

For any smooth Riemannian metric on an $(n+1)$-dimensional compact manifold with boundary $(M,\partial M)$ where $3\leq (n+1)\leq 7$, we establish general upper bounds for the Morse index of free boundary minimal hypersurfaces produced by…

Differential Geometry · Mathematics 2019-07-30 Qiang Guang , Martin Man-chun Li , Zhichao Wang , Xin Zhou

Given a surface $\Sigma$ in $\mathbb{R}^3$ diffeomorphic to $S^2$, Struwe (Acta Math., 1988) proved that for almost every $H$ below the mean curvature of the smallest sphere enclosing $\Sigma$, there exists a branched immersed disk which…

Differential Geometry · Mathematics 2025-05-23 Da Rong Cheng

In this paper we obtain an analogue of Toponogov theorem in dimension 3 for compact manifolds $M^3$ with nonnegative Ricci curvature and strictly convex boundary $\partial M$. Here we obtain a sharp upper bound for the length…

Differential Geometry · Mathematics 2019-10-09 Abraão Mendes

We describe some topological structure in the set of all surfaces with finitely many singularities in the 3-sphere. As an application, we prove that every Riemannian 3-sphere of positive Ricci curvature contains, for every g, a genus g…

Differential Geometry · Mathematics 2025-08-11 Adrian Chun-Pong Chu

This paper is the second in a series where we attempt to give a complete description of the space of all embedded minimal surfaces of fixed genus in a fixed (but arbitrary) closed 3-manifold. The key for understanding such surfaces is to…

Analysis of PDEs · Mathematics 2007-05-23 Tobias H. Colding , William P. Minicozzi

We construct free boundary minimal disc stackings, with any number of strata, in the three-dimensional Euclidean unit ball, and prove uniform, linear lower and upper bounds on the Morse index of all such surfaces. Among other things, our…

Differential Geometry · Mathematics 2025-02-18 Alessandro Carlotto , Mario B. Schulz , David Wiygul

This paper forms part of our ongoing works on the existence of complete non-compact free boundary minimal planes in an asymptotically flat three-dimensional Riemannian manifold with boundary. We set up the degree theory for the space of…

Differential Geometry · Mathematics 2020-10-13 Shanjiang Chen

This is the first of two articles in which we investigate the geometry of free boundary and capillary minimal surfaces in balls $B_R\subset\mathbb{S}^3$. In this article, we extend our previous half-space intersection properties to warped…

Differential Geometry · Mathematics 2025-12-29 Keaton Naff , Jonathan J. Zhu

We establish general bounds on the topology of free boundary minimal surfaces obtained via min-max methods in compact, three-dimensional ambient manifolds with mean convex boundary. We prove that the first Betti number is lower…

Differential Geometry · Mathematics 2026-01-22 Giada Franz , Mario B. Schulz

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…

Differential Geometry · Mathematics 2016-05-25 Haozhao Li , Xin Zhou

We investigate complete non-orientable minimal surfaces of finite total curvature in $\mathbb{R}^3$ such that their ends are foliated by closed lines of curvature. This condition on the ends is necessary if they have a piece inside some…

Differential Geometry · Mathematics 2026-05-12 Carlos Andrés Toro Cardona

In this thesis, we present various contributions to the study of free boundary minimal surfaces. After introducing some basic tools and discussing some delicate aspects related to the definition of Morse index when allowing for a contact…

Differential Geometry · Mathematics 2022-08-26 Giada Franz

We prove that if $(M,g)$ is a topological 3-ball with a $C^4$-smooth Riemannian metric $g$, and mean-convex boundary $\partial M$ then knowledge of least areas circumscribed by simple closed curves $\gamma \subset \partial M$ uniquely…

Differential Geometry · Mathematics 2021-03-26 Spyros Alexakis , Tracey Balehowsky , Adrian Nachman

In this article, we study a free boundary isometric embedding problem for abstract Riemannian two-manifolds with the topology of the disc. Under the assumption of positive Gauss curvature and geodesic curvature of the boundary being equal…

Differential Geometry · Mathematics 2022-02-07 Thomas Koerber

In this paper we use the notion of stability for free boundary surfaces with constant higher order mean curvature to obtain rigidity results for $H_2$-surfaces with free boundary of a geodesic ball of a simply connected $3$-dimensional…

Differential Geometry · Mathematics 2023-05-03 Leonardo Damasceno , Maria Fernanda Elbert

We show that for any extreme curve in a 3-manifold M, there exist a canonical mean convex hull containing all least area disks spanning the curve. Similar result is true for asymptotic case in hyperbolic 3-space such that for any asymptotic…

Differential Geometry · Mathematics 2007-05-23 Baris Coskunuzer

We consider smooth complete solutions to Ricci flow with bounded curvature on manifolds without boundary in dimension three. Assuming an open ball at time zero of radius one has curvature bounded from below by -1, then we prove estimates…

Differential Geometry · Mathematics 2017-05-30 Miles Simon