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We further sharpen higher type adjunction inequalities of P. Ozsv\'ath and Z. Szab\'o on a 4-manifold $M$ with a nonzero Seiberg-Witten invariant for a Spin$^c$ structure $\frak{s}$, when an embedded surface $\Sigma\subset M$ satisfies…

Geometric Topology · Mathematics 2014-06-18 Chanyoung Sung

This paper presents a complete classification of minimal graph surfaces that admit graphical transformations into other minimal surfaces. These transformations are functions that map the height function of a minimal graph surface to another…

Differential Geometry · Mathematics 2026-01-26 Sam K Mathew

We show that finite-type surfaces are characterized by a topological analog of the Hopf property. Namely, an oriented surface $\Sigma$ is of finite-type if and only if every proper map $f\colon\Sigma\to \Sigma$ of degree one is homotopic to…

Geometric Topology · Mathematics 2023-06-07 Sumanta Das , Siddhartha Gadgil

Given any asymptotically flat 3-manifold $(M,g)$ with smooth, non-empty, compact boundary $\Sigma$, the conformal conjecture states that for every $\delta>0$, there exists a metric $g' = u^4 g$, with $u$ a harmonic function, such that the…

Differential Geometry · Mathematics 2025-06-18 Sameer Kumar

In this paper we study $\varphi$-minimal surfaces in $\mathbb{R}^3$ when the function $\varphi$ is invariant under a two-parametric group of translations. Particularly those which are complete graphs over domains in $\mathbb{R}^2$. We…

Differential Geometry · Mathematics 2020-11-30 Antonio Martínez , A. L. Martínez-Triviño

Using the fact that any minimal strongly regular surface carries locally canonical principal parameters, we obtain a canonical representation of these surfaces, which makes more precise the Weierstrass representation in canonical principal…

Differential Geometry · Mathematics 2008-02-19 Georgi Ganchev

We prove a concordance version of the 4-dimensional light bulb theorem for $\pi_1$-negligible compact orientable surfaces, where there is a framed but not necessarily embedded dual sphere. That is, we show that if $F_0$ and $F_1$ are such…

Geometric Topology · Mathematics 2021-09-17 Michael R. Klug , Maggie Miller

The conformal parameterisation of a minimal surface is harmonic. Therefore, a minimal surface is a critical point of both the energy functional and the area functional. In this paper, we compare the Morse index of a minimal surface as a…

Differential Geometry · Mathematics 2007-08-17 Norio Ejiri , Mario Micallef

Quaternionic analysis, which describes conformal maps from Riemann surfaces into $\mathbb{R}^3$ or $\mathbb{R}^4$, is extended to weakly conformal maps. As a consequence we present a new proof that on any compact Riemann surface $X$ the…

Differential Geometry · Mathematics 2025-06-24 Ross Ogilvie , Martin Ulrich Schmidt

We consider a log-Riemann surface $\mathcal{S}$ with a finite number of ramification points and finitely generated fundamental group. The log-Riemann surface is equipped with a local holomorphic difffeomorphism $\pi : \mathcal{S} \to \C$.…

Complex Variables · Mathematics 2015-07-20 Kingshook Biswas , Ricardo Perez-Marco

We construct a Riemannian metric $g$ on $\mathbb{R}^4$ (arbitrarily close to the euclidean one) and a smooth simple closed curve $\Gamma\subset \mathbb R^4$ such that the unique area minimizing surface spanned by $\Gamma$ has infinite…

Differential Geometry · Mathematics 2019-07-02 Camillo De Lellis , Guido De Philippis , Jonas Hirsch

In this paper, we first prove a compactness theorem for the space of closed embedded $f$-minimal surfaces of fixed topology in a closed three-manifold with positive Bakry-\'{E}mery Ricci curvature. Then we give a Lichnerowicz type lower…

Differential Geometry · Mathematics 2017-05-02 Haizhong Li , Yong Wei

Minimal surfaces with planar curvature lines are classical geometric objects, having been studied since the late 19th century. In this paper, we revisit the subject from a different point of view. After calculating their metric functions…

Differential Geometry · Mathematics 2018-05-16 Joseph Cho , Yuta Ogata

This article studies a particular process that approximates solutions of the Beltrami equation (straightening of ellipse fields, a.k.a. measurable Riemann mapping theorem) on $\mathbb{C}$. It passes through the introduction of a sequence of…

Complex Variables · Mathematics 2025-08-05 Arnaud Chéritat , Guillaume Tahar

A very interesting problem in the classical theory of minimal surfaces consists of the classification of such surfaces under some geometrical and topological constraints. In this short paper, we give a brief summary of the known…

Differential Geometry · Mathematics 2007-05-23 M. Magdalena Rodriguez

In this paper we investigate the strict convexity and the differentiability properties of the stable norm, which corresponds to the homogenized surface tension for a periodic perimeter homogenization problem (in a regular and uniformly…

Analysis of PDEs · Mathematics 2012-10-16 Antonin Chambolle , Michael Goldman , Matteo Novaga

In real space forms, Fraser and Schoen proved that a free-boundary minimal disk in a geodesic ball is totally geodesic. In this note, we consider free-boundary minimal surfaces $\Sigma$ (of any genus) in geodesic balls of complex space…

Differential Geometry · Mathematics 2020-11-17 Jesse Madnick

We investigate a phase-field version of the Faber--Krahn theorem based on a phase-field optimization problem introduced in Garcke et al. [ESAIM Control Optim. Calc. Var. 29 (2023), Paper No. 10] formulated for the principal eigenvalue of…

Analysis of PDEs · Mathematics 2024-05-02 Paul Hüttl , Patrik Knopf , Tim Laux

Stated lemma contains the assertions about isomorphism of exact m-forms and exterior differentials of regular m-maps, of linearly harmonic m-forms and exterior differentials of regular harmonic m-maps, of global minimal (n-m)-surfaces and…

General Mathematics · Mathematics 2007-05-23 I. V. Bayak

We study minimal timelike surfaces in $\mathbb R^3_1$ using a special Weierstrass-type formula in terms of holomorphic functions defined in the algebra of the double (split-complex) numbers. We present a method of obtaining an equation of a…

Differential Geometry · Mathematics 2024-03-01 Ognian Kassabov , Velichka Milousheva
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