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The closed string field theory minimal-area problem asks for the conformal metric of least area on a Riemann surface with the condition that all non-contractible closed curves have length at least 2\pi. Through every point in such a metric…

High Energy Physics - Theory · Physics 2020-03-27 Matthew Headrick , Barton Zwiebach

Let $\Omega\subset\r^n$ be a bounded mean convex domain. If $\alpha<0$, we prove the existence and uniqueness of classical solutions of the Dirichlet problem in $\Omega$ for the $\alpha$-singular minimal surface equation with arbitrary…

Differential Geometry · Mathematics 2018-09-18 Rafael López

We study the regularity of minimizers to the composite membrane problem in the plane (ie given a domain omega and a positive number A, smaller than the measure of omega, minimize the first Dirichlet eigenvalue for the Schrodinger operator…

Analysis of PDEs · Mathematics 2008-04-08 Sagun Chanillo , Carlos E. Kenig , Tung TO

The notion of strictly outward minimising hull is investigated for open sets of finite perimeter sitting inside a complete noncompact Riemannian manifold. Under natural geometric assumptions on the ambient manifold, the strictly outward…

Differential Geometry · Mathematics 2021-03-05 Mattia Fogagnolo , Lorenzo Mazzieri

We first take into account variational problems with periodic boundary conditions, and briefly recall some sufficient conditions for a periodic solution of the Euler-Lagrange equation to be either a directional, a weak, or a strong local…

Mathematical Physics · Physics 2022-01-05 Marco Fenucci

We study the problem of minimizing the second Dirichlet eigenvalue for the Laplacian operator among sets of given perimeter. In two dimensions, we prove that the optimum exists, is convex, regular, and its boundary contains exactly two…

Analysis of PDEs · Mathematics 2010-11-29 Dorin Bucur , Giuseppe Buttazzo , Antoine Henrot

The Fermat-Weber location problem requires finding a point in $\mathbb{R}^n$ that minimizes the sum of weighted Euclidean distances to $m$ given points. An iterative solution method for this problem was first introduced by E. Weiszfeld in…

Optimization and Control · Mathematics 2018-06-13 Son D. Nguyen

We look for the minimizers of the functional $\jla{\la}(\oo)=\la|\oo|-P(\oo)$ among planar convex domains constrained to lie into a given ring. We prove that, according to the values of the parameter $\la$, the solutions are either a disc…

Analysis of PDEs · Mathematics 2010-12-22 Chiara Bianchini , Antoine Henrot

Gromov and Sormani conjectured that a sequence of three dimensional Riemannian manifolds with nonnegative scalar curvature and some additional uniform geometric bounds should have a subsequence which converges in some sense to a limit space…

Differential Geometry · Mathematics 2023-10-05 Wenchuan Tian , Changliang Wang

In this paper we study the following problems: given a finite number of nonempty closed subsets of a normed space, find a ball with the smallest radius that encloses all of the sets, and find a ball with the smallest radius that intersects…

Optimization and Control · Mathematics 2012-01-04 Boris S. Mordukhovich , Nguyen Mau Nam , Cristina Villalobos

This paper studies the Dirichlet problem for Laplace's equation in a domain $\Omega_{\varepsilon, \eta}$ perforated with small holes, where $\varepsilon$ represents the scale of the minimal distances between holes and $\eta$ the ratio…

Analysis of PDEs · Mathematics 2022-08-26 Zhongwei Shen

We study the Dirichlet problem for minimal surface systems in arbitrary dimension and codimension via mean curvature flow, and obtain the existence of minimal graphs over arbitrary mean convex bounded $C^2$ domains for a large class of…

Differential Geometry · Mathematics 2023-12-27 Qi Ding , J. Jost , Y. L. Xin

We provide a simpler proof and slight strengthening of Morrey's famous lemma on $\varepsilon$-conformal mappings. Our result more generally applies to Sobolev maps with values in a complete metric space and we obtain applications to the…

Differential Geometry · Mathematics 2019-10-16 Martin Fitzi , Stefan Wenger

We adapt the method of Simon [JDG '93] to prove a $C^{1,\alpha}$-regularity theorem for minimal varifolds which resemble a cone $\bf{C}_0^2$ over an equiangular geodesic net. For varifold classes admitting a "no-hole" condition on the…

Differential Geometry · Mathematics 2017-09-29 Maria Colombo , Nick Edelen , Luca Spolaor

We prove the existence of global minimizers to the double minimization problem \[ \inf\Big\{ P(E) + \lambda W_p(\mathcal{L}^n \lfloor \, E,\mathcal{L}^n \lfloor\, F) \colon |E \cap F| = 0, \, |E| = |F| = 1\Big\}, \] where $P(E)$ denotes the…

Analysis of PDEs · Mathematics 2022-10-06 Michael Novack , Ihsan Topaloglu , Raghavendra Venkatraman

We prove the existence of nontrivial closed surfaces with constant anisotropic mean curvature with respect to elliptic integrands in closed smooth $3$-dimensional Riemannian manifolds. The constructed min-max surfaces are smooth with at…

Differential Geometry · Mathematics 2022-05-26 Guido De Philippis , Antonio De Rosa

We study the asymptotic Dirichlet problem for $f$-minimal graphs in Cartan-Hadamard manifolds $M$. $f$-minimal hypersurfaces are natural generalizations of self-shrinkers which play a crucial role in the study of mean curvature flow. In the…

Differential Geometry · Mathematics 2019-07-26 Jean-Baptiste Casteras , Esko Heinonen , Ilkka Holopainen

Erd\"os posed in 1940 the extremal problem of studying the minimal area of the lemniscate $\{|p(z)|<1\}$ of a monic polynomial $p$ of degree $n$ all of whose zeros are in the closed unit disc. In this article, we prove that there exist…

Complex Variables · Mathematics 2025-03-25 Manjunath Krishnapur , Erik Lundberg , Koushik Ramachandran

Let $N=(\Omega,\sigma)$ and $M=(\Omega^*,\rho)$ be doubly connected Riemann surfaces and assume that $\rho$ is a smooth metric with bounded Gauss curvature $\mathcal{K}$ and finite area. The paper establishes the existence of homeomorphisms…

Complex Variables · Mathematics 2012-04-04 David Kalaj

In 1960 Reifenberg proved the topological disc property. He showed that a subset of $R^n$ which is well approximated by $m$-dimensional affine spaces at each point and at each (small) scale is locally a bi-H\"older image of the unit ball in…

Differential Geometry · Mathematics 2007-05-23 G. David , T. DePauw , T. Toro