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Given a compact Riemannian manifold $(M^n,g)$ and a fixed cohomology class, $[\alpha^*] \in H^k(M)$, we consider the existence of a minimizer $\alpha \in [\alpha^*]$ of the generalized minimal surface energy $\int_M \sqrt{1+|\alpha|^2}…

微分几何 · 数学 2018-03-07 Daniel Agress

We establish a Liouville-type theorem for the elliptic and incompressible Magnetic-B\'enard system defined over the entire three-dimensional space. Specifically, we demonstrate the uniqueness of trivial solutions under the condition that…

偏微分方程分析 · 数学 2024-06-21 Oscar Jarrin

Let $G$ be a finite group acting on a connected open Riemann surface $X$ by holomorphic automorphisms and acting on a Euclidean space $\mathbb R^n$ $(n\ge 3)$ by orthogonal transformations. We identify a necessary and sufficient condition…

微分几何 · 数学 2024-04-30 Franc Forstneric

Lawson and Osserman proved that the Dirichlet problem for the minimal surface system is not always solvable in the class of Lipschitz maps. However, it is known that minimizing sequences (for area) of Lipschitz graphs converge to objects…

偏微分方程分析 · 数学 2024-11-22 Connor Mooney , Ovidiu Savin

We give an elementary and self-contained proof of the uniformization theorem for non-compact simply-connected Riemann surfaces.

复变函数 · 数学 2021-09-06 Cipriana Anghel , Rares Stan

In this paper, we give a new proof of the foundational result, due to S. Cutkosky, on the existence of a monomialisation of a morphism from a 3-fold to a surface. Our proof brings to the fore the notion of log-Fitting ideals, and requires…

代数几何 · 数学 2025-02-26 Yueting Jiang

We classify simple groups that act by birational transformations on compact complex K\"ahler surfaces. Moreover, we show that every finitely generated simple group that acts non-trivially by birational transformations on a projective…

代数几何 · 数学 2018-02-27 Christian Urech

Given a sequence of properly embedded minimal surfaces in a $3$-manifold with local bounds on area and genus, we prove subsequential convergence, smooth away from a discrete set, to a smooth embedded limit surface, possibly with…

微分几何 · 数学 2024-01-26 Brian White

In this paper we study the non-existence of solutions to the Dirichlet problem for minimal graphs of codimension $\geq 2$, including certain situations over domain $\Omega$ even with non-$C^1$ boundary $\partial \Omega$.

微分几何 · 数学 2026-05-12 Yongsheng Zhang

We investigate splitting-type variational problems with some linear growth conditions. For balanced solutions of the associated Euler-Lagrange equation we receive a result analogous to Bernstein's theorem on non-parametric minimal surfaces.…

偏微分方程分析 · 数学 2023-03-17 Michael Bildhauer , Bernhard Farquhar , Martin Fuchs

We study local, analytic solutions for a class of initial value problems for singular ODEs. We prove existence and uniqueness of such solutions under a certain non-resonance condition. Our proof translates the singular initial value problem…

动力系统 · 数学 2021-08-19 Thomas Geert de Jong , Patrick van Meurs

In 1970, Lawson solved the topological realization problem for minimal surfaces in the sphere, showing that any closed orientable surface can be minimally embedded in $\mathbb{S}^3$. The analogous problem for surfaces with boundary was…

微分几何 · 数学 2024-02-21 Mikhail Karpukhin , Robert Kusner , Peter McGrath , Daniel Stern

Let $k$ be a field that is finitely generated over the field of rational numbers and $Br(k)$ the Brauer group of $k$. Let $X$ be an absolutely irreducible smooth projective variety over $k$, let $Br(X)$ be the cohomological…

数论 · 数学 2007-11-05 Alexei Skorobogatov , Yuri Zarhin

We show that the word problem for any 3-manifold group is solvable in time $O(n\log^3 n)$. Our main contribution is the proof that the word problem for admissible graphs of groups, in the sense of Croke and Kleiner, is solvable in $O(n\log…

群论 · 数学 2026-01-16 Alessandro Sisto , Stefanie Zbinden

The purpose of this article is three-fold. First, we apply a general theorem from our earlier work to produce many new minimal doublings of the Clifford Torus in the round three-sphere. This construction generalizes and unifies prior…

微分几何 · 数学 2024-11-04 Nikolaos Kapouleas , Peter McGrath

In this paper, we show that any biharmonic simple rotational surface in the four-dimensional Euclidean space is minimal. The proof is based on reducing the biharmonic equation to a system of ordinary differential equations for the profile…

微分几何 · 数学 2026-05-18 Shun Maeta

We introduce orbifold Euler numbers for normal surfaces with Q-divisors. These numbers behave multiplicatively under finite maps and in the log canonical case we prove that they satisfy the Bogomolov-Miyaoka-Yau type inequality. As a…

代数几何 · 数学 2007-05-23 Adrian Langer

This paper shows that the automorphism group of a Beauville surface is a finite solvable group, and describes its possible structure. It relies on results of Singerman on triangle group inclusions, and of Lucchini on generators for special…

群论 · 数学 2011-02-16 Gareth A. Jones

In \cite{CHMY04}, we studied $p$-mean curvature and the associated $p$-minimal surfaces in the Heisenberg group from the viewpoint of PDE and differential geometry. In this paper, we look into the problem through the variational…

微分几何 · 数学 2008-04-14 Jih-Hsin Cheng , Jenn-Fang Hwang , Paul Yang

We present a simple proof of the surface classification theorem using normal curves. This proof is analogous to Kneser's and Milnor's proof of the existence and uniqueness of the prime decomposition of 3-manifolds. In particular, we do not…

几何拓扑 · 数学 2026-02-10 Fethi Ayaz , Marc Kegel , Klaus Mohnke