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We construct complete, embedded minimal annuli asymptotic to vertical planes in the Riemannian 3-manifold PSL. The boundary of these annuli consists of 4 vertical lines at infinity. They are constructed by taking the limit of a sequence of…

Differential Geometry · Mathematics 2021-09-28 Pascal Collin , Laurent Hauswirth , Minh Hoang Nguyen

We study free boundary minimal surfaces in the unit ball of low cohomogeneity. For each pair of positive integers $(m,n)$ such that $m, n >1$ and $m+n\geq 8$, we construct a free boundary minimal surface $\Sigma_{m, n} \subset B^{m+n}$(1)…

Differential Geometry · Mathematics 2016-01-29 Brian Freidin , Mamikon Gulian , Peter McGrath

For every $p,q\geq 1$, we construct minimal embeddings of $\mathbb{S}^p \times \mathbb{S}^q \times \mathbb{S}^1$ in $\mathbb{S}^{p + q + 2}$ by doubling the links of free-boundary minimal cones in $\mathbb{R}^{p+q+3}$ with bi-orthogonal…

Differential Geometry · Mathematics 2026-02-24 Benjy Firester , Raphael Tsiamis

We prove that strictly mean convex toroids contain infinitely many (geometrically distinct) embedded free boundary minimal M\"obius bands as well as infinitely many embedded free boundary minimal annuli. The surfaces in both families are…

Differential Geometry · Mathematics 2024-10-10 Mario B. Schulz

Let $M$ be a compact 3-dimensional Riemannian manifold with nonnegative Ricci curvature and a nonempty boundary $\partial M$. Fraser and Li \cite{Fraser&Li} established a compactness theorem for the space of compact, properly embedded…

Differential Geometry · Mathematics 2026-04-15 Pak Tung Ho , Juncheol Pyo , Keomkyo Seo

We use variational methods to construct a free boundary minimal surface in the three-dimensional unit ball with genus one, two boundary components and prismatic symmetry. Key ingredients are an extension of the equivariant min-max theory to…

Differential Geometry · Mathematics 2024-09-20 Giada Franz , Daniel Ketover , Mario B. Schulz

We construct a sequence of compact embedded minimal disks in the unit ball in Euclidean 3-space whose boundaries are in the boundary of the ball and where the curvatures blow up at every point of a line segment of the vertical axis,…

Differential Geometry · Mathematics 2009-04-01 Siddique Khan

We present a proof of the generalized Nitsche's conjecture proposed by W.H.Meeks III and H. Rosenberg: For $t\ge 0$, let $P_t$ denote the horizontal plane of height $t$ over the $x_1,x_2$ plane. Suppose that $M \subset R^3$ is a minimal…

dg-ga · Mathematics 2008-02-03 Qing Chen

We prove that if a topological sphere smoothly embedded into $\mathbb{R}^3$ with normal curvatures absolutely bounded by $1$ is contained in an open ball of radius $2$, then the region it bounds must contain a unit ball. This result…

Differential Geometry · Mathematics 2026-01-27 Hongda Qiu

These notes outline recent developments in classical minimal surface theory that are essential in classifying the properly embedded minimal planar domains M in R^3 with infinite topology (equivalently, with an infinite number of ends). This…

Differential Geometry · Mathematics 2009-09-15 William H. Meeks , Joaquin Perez

We study compactly free boundary minimal submanifolds in spherical caps $\Br$ and their geometric spectral properties. Following the foundational work of Fraser-Schoen \cite{FS2012}, Lima-Menezes \cite{LM23} established the connection…

Differential Geometry · Mathematics 2025-07-31 Mateus Spezia

In this survey, we discuss some recent results on free boundary minimal surfaces in the Euclidean unit-ball. The subject has been a very active field of research in the past few years due to the seminal work of Fraser and Schoen on the…

Differential Geometry · Mathematics 2020-07-03 Martin Li

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 $\mathbb{S}^2 \times \mathbb{R}$ there is a two-parameter family of properly embedded minimal annuli foliated by circles. In this paper we show that this family contains all properly embedded minimal annuli. We use the description of…

Differential Geometry · Mathematics 2020-12-21 L. Hauswirth , M. Kilian , M. U. Schmidt

In this work we present a new family of properly embedded free boundary minimal hypersurfaces of revolution with circular boundaries in the horizon of the $n$-dimensional Schwarzschild space, $n\geq3$. In particular, we answer a question…

Differential Geometry · Mathematics 2022-10-17 Ezequiel Barbosa , David Moya

For each integer $g\geq 1$ we use variational methods to construct in the unit $3$-ball $B$ a free boundary minimal surface $\Sigma_g$ of symmetry group $\mathbb{D}_{g+1}$. For $g$ large, $\Sigma_g$ has three boundary components and genus…

Differential Geometry · Mathematics 2016-12-28 Daniel Ketover

Let $\mathcal{Z}$ be a spin $4$-manifold carrying a parallel spinor and $M\hookrightarrow \mathcal{Z}$ a hypersurface. The second fundamental form of the embedding induces a flat metric connection on $TM$. Such flat connections satisfy a…

Differential Geometry · Mathematics 2022-04-28 Brice Flamencourt , Sergiu Moroianu

We construct non-flat minimal capillary cones with bi-orthogonal symmetry groups for any dimension and contact angle. These cones interpolate between rescalings of a singular solution to the one-phase problem and the free-boundary cone…

Differential Geometry · Mathematics 2026-01-27 Benjy Firester , Raphael Tsiamis , Yipeng Wang

In this paper we prove that a flat free-boundary minimal $n$-disk, $n\geq3$, in the unit Euclidean ball $B^{n+1}$ is the unique compact free boundary minimal hypersurface in the unit Euclidean ball which the squared norm of the second…

Differential Geometry · Mathematics 2018-07-31 Ezequiel Barbosa , Edno Pereira , Rosivaldo Antônio Gonçalves

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…

Differential Geometry · Mathematics 2018-11-28 Ailana Fraser , Richard Schoen