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We consider the fractional Schr\"odinger operator with Hardy potential and critical or subcritical coupling constant. This operator generates a natural scale of homogeneous Sobolev spaces which we compare with the ordinary homogeneous…

偏微分方程分析 · 数学 2023-04-19 Rupert L. Frank , Konstantin Merz , Heinz Siedentop

Upper bounds are obtained for the heat content of an open set D in a geodesically complete Riemannian manifold M with Dirichlet boundary condition on bd(D), and non-negative initial condition. We show that these upper bounds are close to…

谱理论 · 数学 2011-06-03 M. van den Berg , P. Gilkey , K. Kirsten , A. Grigor'yan

Motivated by some results due to Burbea we prove that if a certain sharp integral inequality holds for functions in the unit polydisc which belong to concrete Hardy spaces, then it also holds, in an appropriate form, in the case of…

复变函数 · 数学 2015-01-26 Marijan Markovic

Littlewood's theorem is one of the pioneering results in random analytic functions over the open unit disk. In this paper, we prove some analogues of this theorem for Hardy spaces in infinitely many variables. Our results not only cover…

泛函分析 · 数学 2024-02-20 Jiaqi Ni

Certain many-particle Hardy inequalities are derived in a simple and systematic way using the so-called ground state representation for the Laplacian on a subdomain of $\mathbb{R}^n$. This includes geometric extensions of the standard Hardy…

数学物理 · 物理学 2015-04-14 Douglas Lundholm

We establish simple pointwise characterizations of functions in the Hardy-Sobolev spaces within the range n/(n+1)<p <=1. In addition, classical Hardy inequalities are extended to the case p <= 1.

泛函分析 · 数学 2007-05-23 Pekka Koskela , Eero Saksman

We introduce generalized Fofana spaces and we give some of their basic properties. These spaces are a kind of generalization of generalized Morrey spaces. As application, we establish the boundedness of the Hardy-Littlewood maximal operator…

泛函分析 · 数学 2026-05-22 Pokou Nagacy , Berenger Akon Kpata , Nouffou Diarra

We present new estimate for Hardy-type inequality in variable exponent Lebesgue spaces. More precisely, by imposing regularity assumptions on the exponent, we prove that the estimations can be reduced to the fixed exponents.

泛函分析 · 数学 2017-03-09 Douadi Drihem

In this article, we define discrete analogue of generalized Hardy spaces and its separable subspace on a homogenous rooted tree and study some of its properties such as completeness, inclusion relations with other spaces, separability,…

泛函分析 · 数学 2016-08-12 Perumal Muthukumar , Saminathan Ponnusamy

We prove a sharp integral inequality valid for non-negative functions defined on $[0,1]$, with given $L^1$ norm. This is in fact a generalization of the well known integral Hardy inequality. We prove it as a consequence of the respective…

泛函分析 · 数学 2014-12-09 Eleftherios N. Nikolidakis

[1] investigates advanced connotations of Hardy and Rellich-type inequalities on complete noncompact Riemannian manifolds, delving on deriving inequalities that incorporate poignant weight functions. These inequalities prolongate classical…

微分几何 · 数学 2024-11-13 Shouvik Datta Choudhury

On a bounded smooth domain we study solutions of a semilinear elliptic equation with an exponential nonlinearity and a Hardy potential depending on the distance to the boundary of the domain. We derive global a priori bounds of the…

偏微分方程分析 · 数学 2018-07-31 Catherine Bandle , Vitaly Moroz , Wolfgang Reichel

Hardy's inequality for Laguerre expansions of Hermite type with the index $\al\in(\{-1/2\}\cup[1/2,\infty))^d$ is proved in the multi-dimensional setting with the exponent $3d/4$. We also obtain the sharp analogue of Hardy's inequality with…

经典分析与常微分方程 · 数学 2018-10-10 Paweł Plewa

In this paper, we derive a generalized multiplicative Hardy-Littlewood-Polya type inequality, as well as several related additive inequalities, for functions of operators in Hilbert spaces. In addition, we find the modulus of continuity of…

泛函分析 · 数学 2015-10-06 Vladyslav Babenko , Yuliya Babenko , Nadiia Kriachko

In this paper, Hardy's uncertainty principle and unique continuation properties of abstract Schr\"odinger equations in vector-valued classes are obtained

偏微分方程分析 · 数学 2017-06-06 Veli Shakhmurov

In this paper we prove generic results concerning Hardy spaces in one or several complex variables. More precisely, we show that the generic function in certain Hardy type spaces is totally unbounded and hence non-extentable, despite the…

复变函数 · 数学 2019-05-14 Kyranna Kioulafa

This paper is concerned with the problem of decomposing a higher order Lipschitz function on a closed Jordan curve $\Gamma$ into a sum of two polyanalytic functions in each open domain defined by $\Gamma$. Our basic tools are the Hardy…

复变函数 · 数学 2023-02-09 Ricardo Abreu Blaya , Lianet De la Cruz Toranzo

We characterize the weighted Hardy's inequalities for monotone functions in ${\mathbb R^n_+}.$ In dimension $n=1$, this recovers the classical theory of $B_p$ weights. For $n>1$, the result was only known for the case $p=1$. In fact, our…

经典分析与常微分方程 · 数学 2007-05-23 Nicola Arcozzi , Sorina Barza , Josep L. Garcia-Domingo , Javier Soria

We prove a Hardy inequality on convex sets, for fractional Sobolev-Slobodecki\u{\i} spaces of order $(s,p)$. The proof is based on the fact that in a convex set the distance from the boundary is a superharmonic function, in a suitable…

偏微分方程分析 · 数学 2018-06-12 Lorenzo Brasco , Eleonora Cinti

Spectral measures give rise to a natural harmonic analysis on the unit disc via a boundary representation of a positive matrix arising from a spectrum of the measure. We consider in this paper the reverse: for a positive matrix in the Hardy…

泛函分析 · 数学 2017-05-12 John E. Herr , Palle E. T. Jorgensen , Eric S. Weber