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A marginally trapped surface in the four-dimensional Minkowski space is a spacelike surface whose mean curvature vector is lightlike at each point. We introduce meridian surfaces of parabolic type as one-parameter systems of meridians of a…

Differential Geometry · Mathematics 2013-12-06 Georgi Ganchev , Velichka Milousheva

We show that the image of a nonconstant conformal harmonic map $\mathbb C\to \mathbb R^3$, not necessarily proper and possibly with branch points, intersects every properly embedded nonflat minimal surface of bounded curvature in $\mathbb…

Differential Geometry · Mathematics 2022-07-06 Franc Forstneric

We show that a topologically minimal disk in a tetrahedron with index $n$ is either a normal triangle, a normal quadrilateral, or a normal helicoid with boundary length 4(n+1). This mirrors geometric results of Colding and Minicozzi.

Geometric Topology · Mathematics 2012-10-18 David Bachman

We shall investigate flat surfaces in hyperbolic 3-space with admissible singularities, called `flat fronts'. An Osserman-type inequality for complete flat fronts is shown. When equality holds in this inequality, we show that all the ends…

Differential Geometry · Mathematics 2007-05-23 Masatoshi Kokubu , Masaaki Umehara , Kotaro Yamada

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

We discuss quantum analogues of minimal surfaces in Euclidean spaces and tori.

Mathematical Physics · Physics 2019-03-28 Joakim Arnlind , Jens Hoppe , Maxim Kontsevich

Surfaces with concentric $K$-contours and parallel $K$-contours in Euclidean $3$-space are defined. Crucial examples are presented and characterization of them are given.

Differential Geometry · Mathematics 2024-04-23 Shoichi Fujimori , Yu Kawakami , Masatoshi Kokubu

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 show that compact Riemannian three-manifolds with negative sectional curvature possess closed minimal surfaces of arbitrarily high Morse index.

Differential Geometry · Mathematics 2018-05-09 John Douglas Moore

It is known that a complete immersed minimal surface with finite total curvature in $\mathbb H^2\times\mathbb R$ is proper, has finite topology and each one of its ends is asymptotic to a geodesic polygon at infinity (Hauswirth and…

Differential Geometry · Mathematics 2019-02-15 Laurent Hauswirth , Ana Menezes , Magdalena Rodríguez

We show that any surface of infinite type admits an ideal triangulation. Furthermore, we show that a set of disjoint arcs can be completed into a triangulation if and only if, as a set, they intersect every simple closed curve a finite…

Geometric Topology · Mathematics 2021-02-19 Alan McLeay , Hugo Parlier

In earlier work we introduced topologically minimal surfaces as the analogue of geometrically minimal surfaces. Here we strengthen the analogy by showing that complicated amalgamations act as barriers to low genus, topologically minimal…

Geometric Topology · Mathematics 2009-03-11 David Bachman

We prove that the Gauss curvature and the curvature of the normal connection of any minimal surface in the four dimensional Euclidean space satisfy an inequality, which generates two classes of minimal surfaces: minimal surfaces of general…

Differential Geometry · Mathematics 2008-06-23 Georgi Ganchev , Velichka Milousheva

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

It is pointed out that despite of the non-linearity of the underlying equations, there do exist rather general methods that allow to generate new minimal surfaces from known ones.

Differential Geometry · Mathematics 2018-11-26 Jens Hoppe , Vladimir G. Tkachev

In this paper, we study geometry of totally real minimal surfaces in the complex hyperquadric $Q_{N-2}$, and obtain some characterizations of the harmonic sequence generated by these minimal immersions. For totally real flat surfaces that…

Differential Geometry · Mathematics 2020-01-09 Ling He , Xiaoxiang Jiao , Mingyan Li

The topological index of a surface was previously introduced by the first author as the topological analogue of the index of an unstable minimal surface. Here we show that surfaces of arbitrarily high topological index exist.

Geometric Topology · Mathematics 2009-09-16 David Bachman , Jesse Johnson

This paper gives, in generic situations, a complete classification of ruled minimal surfaces in pseudo-Euclidean space with arbitrary index. In addition, we discuss the condition for ruled minimal surfaces to exist, and give a…

Differential Geometry · Mathematics 2018-10-18 Yuichiro Sato

We find the minimal number of self-intersections of the boundary of a surface of genus g generically immersed in the plane.

Differential Geometry · Mathematics 2009-03-19 Larry Guth

We present a new construction of embedded minimal surfaces in hyperbolic space with $3$ asymptotically totally geodesic ends and arbitrary finite genus.

Differential Geometry · Mathematics 2018-06-01 Asun Jiménez Grande , Graham Smith