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Local minimizers for the anisotropic isoperimetric problem in the small-volume regime on closed Riemannian manifolds are shown to be geodesically convex and small smooth perturbations of tangent Wulff shapes, quantitatively in terms of the…

Analysis of PDEs · Mathematics 2025-09-08 Antonio De Rosa , Robin Neumayer

Minimum Riesz energy problems in the presence of an external field are analyzed for a condenser with touching plates. We obtain sufficient and/or necessary conditions for the solvability of these problems in both the unconstrained and the…

Classical Analysis and ODEs · Mathematics 2015-04-16 P. D. Dragnev , D. Hardin , E. B. Saff , N. Zorii

In this paper we consider the volume-constrained minimization of a variant of the Ohta-Kawasaki functional with an anisotropic surface energy replacing the standard perimeter. Following and suitably adapting the second variation approach…

Analysis of PDEs · Mathematics 2026-04-16 Alberto Fiorini

Dimension is an inherent bottleneck to some modern learning tasks, where optimization methods suffer from the size of the data. In this paper, we study non-isotropic distributions of data and develop tools that aim at reducing these…

Machine Learning · Statistics 2025-02-12 Mathieu Even , Laurent Massoulié

Besides the chemical constituents, it is the lattice geometry that controls the most important material properties. In many interesting compounds, the arrangement of elements leads to pronounced anisotropies, which reflect into a varying…

Strongly Correlated Electrons · Physics 2021-01-27 Benjamin Klebel , Thomas Schäfer , Alessandro Toschi , Jan M. Tomczak

We study a capacity theory based on a definition of a Riesz potential in metric spaces with a doubling measure. In this general setting, we study the basic properties of the Riesz capacity, including monotonicity, countable subadditivity…

Functional Analysis · Mathematics 2015-10-30 Juho Nuutinen , Pilar Silvestre

We show that the support of any local minimizer of the interaction energy consists of isolated points whenever the interaction potential is of class $C^2$ and mildly repulsive at the origin; moreover, if the minimizer is global, then its…

Analysis of PDEs · Mathematics 2017-06-09 J. A. Carrillo , A. Figalli , F. S. Patacchini

We consider a class of nonlocal generalized perimeters which includes fractional perimeters and Riesz type potentials. We prove a general isoperimetric inequality for such functionals, and we discuss some applications. In particular we…

Analysis of PDEs · Mathematics 2017-09-05 Annalisa Cesaroni , Matteo Novaga

We obtain a sharp quantitative isoperimetric inequality for nonlocal $s$-perimeters, uniform with respect to $s$ bounded away from $0$. This allows us to address local and global minimality properties of balls with respect to the…

Analysis of PDEs · Mathematics 2022-02-25 Alessio Figalli , Nicola Fusco , Francesco Maggi , Vincent Millot , Massimiliano Morini

In this paper we study elliptic and parabolic boundary value problems with inhomogeneous boundary conditions in weighted function spaces of Sobolev, Bessel potential, Besov and Triebel-Lizorkin type. As one of the main results, we solve the…

Analysis of PDEs · Mathematics 2021-05-17 Felix Hummel , Nick Lindemulder

We study measures and point configurations optimizing energies based on multivariate potentials. The emphasis is put on potentials defined by geometric characteristics of sets of points, which serve as multi-input generalizations of the…

Classical Analysis and ODEs · Mathematics 2023-03-28 Dmitriy Bilyk , Damir Ferizović , Alexey Glazyrin , Ryan W. Matzke , Josiah Park , Oleksandr Vlasiuk

In the Bianchi I cosmology some subclasses of the Horndeski theory allow for the non-standard anisotropy behavior. For example, the anisotropy is damped near the initial singularity instead of tending to infinity. In this article, we…

General Relativity and Quantum Cosmology · Physics 2022-12-27 Ruslan K. Muharlyamov , Tatiana N. Pankratyeva

This article is divided into two parts. In the first part, we examine the Brezis-Oswald problem involving a mixed anisotropic and nonlocal $p$-Laplace operator. We establish results on existence, uniqueness, boundedness, and the strong…

Analysis of PDEs · Mathematics 2025-03-03 Prashanta Garain

We establish the local boundedness of the local minimizers $u:\Omega\rightarrow\mathbb{R}^{m}$ of non-uniformly elliptic integrals of the form $\int_{\Omega}f(x,Dv)\,dx$, where $\Omega$ is a bounded open subset of $\mathbb{R}^{n}$…

Analysis of PDEs · Mathematics 2026-02-12 Pasquale Ambrosio , Giovanni Cupini , Elvira Mascolo

In this paper we develop a new set of results based on a nonlocal gradient jointly inspired by the Riesz s-fractional gradient and Peridynamics, in the sense that its integration domain depends on a ball of radius delta > 0 (horizon of…

Analysis of PDEs · Mathematics 2022-11-07 José Carlos Bellido , Javier Cueto , Carlos Mora-Corral

We consider the parabolic Anderson model, the Cauchy problem for the heat equation with random potential in $Z^d$. We use i.i.d. potentials $\xi: Z^d \to \R$ in the third universality class, namely the class of almost bounded potentials, in…

Probability · Mathematics 2007-08-24 Gabriela Gruninger , Wolfgang Konig

This paper is devoted to the numerical approximation of a degenerate anisotropic elliptic problem. The numerical method is designed for arbitrary space-dependent anisotropy directions and does not require any specially adapted coordinate…

Numerical Analysis · Mathematics 2014-04-08 Stéphane Brull , Pierre Degond , Fabrice Deluzet

We study within the framework of the Lifshitz theory the long-range Casimir force for in-plane isotropic and anisotropic free-standing transdimensional material slabs. In the former case, we show that the confinement-induced nonlocality not…

We survey known results and present estimates and conjectures for the next-order term in the asymptotics of the optimal logarithmic energy and Riesz $s$-energy of $N$ points on the unit sphere in $\mathbb{R}^{d+1}$, $d\geq 1$. The…

Mathematical Physics · Physics 2014-02-17 J. S. Brauchart , D. P. Hardin , E. B. Saff

We establish the Lipschitz regularity of the a priori bounded local minimizers of integral functionals with non autonomous energy densities satisfying non standard growth conditions under a sharp bound on the gap between the growth and the…

Analysis of PDEs · Mathematics 2023-10-10 Michela Eleuteri , Antonia Passarelli di Napoli