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In the theory of inner and outer balayage of positive Radon measures on a locally compact space $X$ to arbitrary $A\subset X$ with respect to suitable, quite general function kernels, developed in a series of the author's recent papers, we…

Classical Analysis and ODEs · Mathematics 2024-07-23 Natalia Zorii

First introduced by J. Deny, the classical principle of positivity of mass states that if $\kappa_\alpha\mu\leqslant\kappa_\alpha\nu$ everywhere on $\mathbb{R}^n$, then $\mu(\mathbb{R}^n)\leqslant\nu(\mathbb{R}^n)$. Here $\mu,\nu$ are…

Classical Analysis and ODEs · Mathematics 2023-03-14 Natalia Zorii

Given a positive definite kernel in a locally compact space, we study a minimal energy problem in the presence of an external field over the class of all nonnegative Radon measures that are supported by a given closed noncompact set,…

Classical Analysis and ODEs · Mathematics 2010-01-26 Natalia Zorii

The paper deals with the theory of inner (outer) capacities on locally compact spaces with respect to general function kernels, the main emphasis being placed on the establishment of alternative characterizations of inner (outer) capacities…

Classical Analysis and ODEs · Mathematics 2022-02-07 Natalia Zorii

The purpose of this work is twofold. First, we aim to extend for $0<s<1$ the results of one of the authors about equilibrium measures in the real axis in external fields created by point-mass charges for the case of logarithmic potentials…

Classical Analysis and ODEs · Mathematics 2019-05-10 David Benko , Peter Dragnev , Ramon Orive

We investigate the Riesz energy minimization problem on a $d$-dimensional ball in the presence of an external field created by a point charge above the ball in $\R^{d+1}$, $d\geq1$. Both cases of an attractive charge and a repulsive charge…

Classical Analysis and ODEs · Mathematics 2025-01-03 Peter D. Dragnev , Ramon Orive , Eduard B. Saff , Franck Wielonsky

We develop and use some key concepts of potential theory, such as balayage and duality between measures and their potentials, to study the distribution of masses of subharmonic functions while restrictions to their growth near the boundary…

Complex Variables · Mathematics 2020-02-11 Bulat N. Khabibullin , Enzhe B. Menshikova

We study Riesz bases/Riesz sequences of reproducing kernels in the model space $K_\theta$ in connection with the corresponding Schur--Nevanlinna parameters and functions. In particular, we construct inner functions with given…

Functional Analysis · Mathematics 2022-03-30 Inna Boricheva

We study minimal energy problems for strongly singular Riesz kernels on a manifold. Based on the spatial energy of harmonic double layer potentials, we are motivated to formulate the natural regularization of such problems by switching to…

Classical Analysis and ODEs · Mathematics 2016-03-01 Helmut Harbrecht , Wolfgang L. Wendland , Natalia Zorii

Let A be a compact set in the right-half plane and $\Gamma(A)$ the set in $\mathbb{R}^{3}$ obtained by rotating A about the vertical axis. We investigate the support of the limit distribution of minimal energy point charges on $\Gamma(A)$…

Mathematical Physics · Physics 2009-11-13 J. S. Brauchart , D. P. Hardin , E. B. Saff

We study probability measures that minimize the Riesz energy with respect to the geodesic distance $\vartheta (x,y)$ on projective spaces $\mathbb{FP}^d$ (such energies arise from the 1959 conjecture of Fejes T\'oth about sums of non-obtuse…

Classical Analysis and ODEs · Mathematics 2024-09-26 Dmitriy Bilyk , Ryan W. Matzke , Joel Nathe

Let $A$ be a compact set in ${\mathbb R}^p$ of Hausdorff dimension $d$. For $s\in(0,d)$, the Riesz $s$-equilibrium measure $\mu^s$ is the unique Borel probability measure with support in $A$ that minimizes $$…

Mathematical Physics · Physics 2008-08-29 M. T. Calef , D. P. Hardin

We investigate the classical gravitational tests for the six-dimensional Kaluza-Klein model with spherical (of a radius $a$) compactification of the internal space. The model contains also a bare multidimensional cosmological constant…

General Relativity and Quantum Cosmology · Physics 2013-10-22 Alexey Chopovsky , Maxim Eingorn , Alexander Zhuk

Let \( P \) and \( Q \) be the quantum-mechanical momentum and position operators on \( L^2(\R) \). Let $\zeta>0.$ We provide estimates for the {\it Riesz means} $\varkappa(\lambda)$ associated with the system of eigenvalues of the operator…

Mathematical Physics · Physics 2025-08-22 Duván Cardona

For a closed subset $K$ of a compact metric space $A$ possessing an $\alpha$-regular measure $\mu$ with $\mu(K)>0$, we prove that whenever $s>\alpha$, any sequence of weighted minimal Riesz $s$-energy configurations…

Mathematical Physics · Physics 2011-11-23 D. P. Hardin , E. B. Saff , J. T. Whitehouse

In this paper we show that if $\mu$ is a Borel measure in $\mathbb R^{n+1}$ with growth of order $n$, so that the $n$-dimensional Riesz transform $R_\mu$ is bounded in $L^2(\mu)$, and $B\subset\mathbb R^{n+1}$ is a ball with $\mu(B)\approx…

Classical Analysis and ODEs · Mathematics 2017-09-18 Daniel Girela-Sarrión , Xavier Tolsa

Fix $d\geq 2$, and $s\in (d-1,d)$. We characterize the non-negative locally finite non-atomic Borel measures $\mu$ in $\mathbb{R}^d$ for which the associated $s$-Riesz transform is bounded in $L^2(\mu)$ in terms of the Wolff energy. This…

Analysis of PDEs · Mathematics 2016-03-01 Benjamin Jaye , Fedor Nazarov , Maria Carmen Reguera , Xavier Tolsa

Balayage of measures with respect to classes of all subharmonic or harmonic functions on an open set of a plane or finite-dimensional Euclidean space is one of the main objects of potential theory and its applications to the complex…

Complex Variables · Mathematics 2020-08-05 B. N. Khabibullin , E. B. Menshikova

We use Minkowski content (i.e., natural parametrization) of SLE to construct several types of SLE$_\kappa$ loop measures for $\kappa\in(0,8)$. First, we construct rooted SLE$_\kappa$ loop measures in the Riemann sphere $\widehat{\mathbb…

Probability · Mathematics 2017-10-13 Dapeng Zhan

In this work, we study discrete minimizers of the Ginzburg-Landau energy in finite element spaces. Special focus is given to the influence of the Ginzburg-Landau parameter $\kappa$. This parameter is of physical interest as large values can…

Numerical Analysis · Mathematics 2024-02-20 Benjamin Dörich , Patrick Henning