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Vladimir Arnold defined three invariants for generic planar immersions, i.e. planar curves whose self-intersections are all transverse double points. We use a variational approach to study these invariants by investigating a suitably…

Classical Analysis and ODEs · Mathematics 2025-11-17 Anna Lagemann , Heiko von der Mosel

The factorization method was introduced by Schroedinger in 1940. Its use in bound-state problems is widely known, including in supersymmetric quantum mechanics; one can create a factorization chain, which simultaneously solves a sequence of…

Quantum Physics · Physics 2023-02-22 James K. Freericks , W. N. Mathews

This paper generalizes the entropy maximization problem leading to the Boltzmann-Gibbs distribution through the nonadditive entropy $S_{q,s}(p)=k_{s}\sum^{W}_{i\geq1}p_{i}\ln_{q}1/p_{i}$, $q\in(0,1)$, which is a rescaled version of $S_{q}$…

Mathematical Physics · Physics 2025-12-02 Leandro Lyra Braga Dognini

In this paper, we establish an $\varepsilon$-regularity theorem for minimizers of an Alt-Phillips type functional subject to constraint maps. We prove that under sufficiently small energy, the minimizers exhibit regularity, and hence…

Analysis of PDEs · Mathematics 2026-04-01 Rada Ziganshina

Inspired by previous work of Kusner and Bauer-Kuwert, we prove a strict inequality between the Willmore energies of two surfaces and their connected sum in the context of isoperimetric constraints. Building on previous work by…

Differential Geometry · Mathematics 2021-07-19 Andrea Mondino , Christian Scharrer

For the unit sphere S^d in Euclidean space R^(d+1), we show that for d-1<s<d and any N>1, discrete N-point minimal Riesz s-energy configurations are well separated in the sense that the minimal distance between any pair of distinct points…

Mathematical Physics · Physics 2007-05-23 A. B. J. Kuijlaars , E. B. Saff , X. Sun

We consider in this work the problem of minimizing the von Neumann entropy under the constraints that the density of particles, the current, and the kinetic energy of the system is fixed at each point of space. The unique minimizer is a…

Mathematical Physics · Physics 2019-10-29 Romain Duboscq , Olivier Pinaud

We study the radial symmetry of minimizers to the Schroedinger-Poisson-Slater (S-P-S) energy.

Analysis of PDEs · Mathematics 2016-01-20 Vladimir Georgiev , Francesca Prinari , Nicola Visciglia

We consider the following dynamics on a connected graph $(V,E)$ with $n$ vertices. Given $p>1$ and an initial opinion profile $f_0:V \to [0,1]$, at each integer step $t \ge 1$ a uniformly random vertex $v=v_t$ is selected, and the opinion…

Probability · Mathematics 2025-08-28 Gideon Amir , Fedor Nazarov , Yuval Peres

Splitting and projection-type algorithms have been applied to many optimization problems due to their simplicity and efficiency, but the application of these algorithms to optimal control is less common. In this paper we utilize the…

Optimization and Control · Mathematics 2024-01-15 Regina S. Burachik , Bethany I. Caldwell , C. Yalçın Kaya

The goal of the present paper is to establish some kind of regularity of an energy minimizer map between Riemannian polyhedra. More precisely, we will show the h\"{o}lder continuity of local energy minimizers between Riemannian polyhedra…

Differential Geometry · Mathematics 2007-05-23 Taoufik Bouziane

We show that minimizers of the Heitmann-Radin energy (R. C. Heitmann, C. Radin, J. Stat. Phys. 22, 281-287, 1980) are unique if and only if the particle number N belongs to an infinite sequence whose first thirty-five elements are 1, 2, 3,…

Mathematical Physics · Physics 2017-04-26 Lucia De Luca , Gero Friesecke

We consider the following semilinear elliptic equation on a strip: \[ \left\{{array}{l} \Delta u-u + u^p=0 \ {in} \ \R^{N-1} \times (0, L), u>0, \frac{\partial u}{\partial \nu}=0 \ {on} \ \partial (\R^{N-1} \times (0, L)) {array} \right.\]…

Analysis of PDEs · Mathematics 2010-10-13 Henri Berestycki , Juncheng Wei

Uniformly distributed point sets on the unit sphere with and without symmetry constraints have been found useful in many scientific and engineering applications. Here, a novel variant of the Thomson problem is proposed and formulated as an…

Classical Physics · Physics 2014-08-15 Cheng Guan Koay

The honeycomb problem on the sphere asks for the perimeter-minimizing partition of the sphere into N equal areas. This article solves the problem when N=12. The unique minimizer is a tiling of 12 regular pentagons in the dodecahedral…

Metric Geometry · Mathematics 2007-05-23 Thomas C. Hales

We show that in the setting of proper metric spaces one obtains a solution of the classical two-dimensional Plateau problem by minimizing the energy, as in the classical case, once a definition of area (in the sense of convex geometry) has…

Differential Geometry · Mathematics 2015-07-17 Alexander Lytchak , Stefan Wenger

Disconnectivity graphs are used to characterize the potential energy surfaces of Lennard-Jones clusters containing 13, 19, 31, 38, 55 and 75 atoms. This set includes members which exhibit either one or two `funnels' whose low-energy regions…

Condensed Matter · Physics 2007-05-23 Jonathan Doye , Mark Miller , David Wales

Energy minimality selects among possible configurations of a continuous body with and without cracks those compatible with assigned boundary conditions of Dirichlet-type. Crack paths are described in terms of curvature varifolds so that we…

Analysis of PDEs · Mathematics 2022-01-19 Martin Kružík , Paolo Maria Mariano , Domenico Mucci

We investigate the convergence as $p\searrow1$ of the minimizers of the $W^{s,p}$-energy for $s\in(0,1)$ and $p\in(1,\infty)$ to those of the $W^{s,1}$-energy, both in the pointwise sense and by means of $\Gamma$-convergence. We also…

Analysis of PDEs · Mathematics 2021-09-13 Claudia Bucur , Serena Dipierro , Luca Lombardini , José M. Mazón , Enrico Valdinoci

This letter proposes an energy efficient distributed worst case robust power allocation in massive multiple input multiple output (MIMO) system. We assume a bounded channel state information (CSI) error and all channels lie in some bounded…

Signal Processing · Electrical Eng. & Systems 2019-01-04 Saeed Sadeghi Vilni