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We prove a sharp Hardy inequality for fractional integrals for functions that are supported on a general domain. The constant is the same as the one for the half-space and hence our result settles a recent conjecture of Bogdan and Dyda.

偏微分方程分析 · 数学 2010-02-22 Michael Loss , Craig Sloane

A Hardy inequality of the form \[\int_{\tilde{\Omega}} |\nabla f({\bf{x}})|^p d {\bf{x}} \ge (\frac{p-1}{p})^p \int_{\tilde{\Omega}} \{1 + a(\delta, \partial \tilde{\Omega})(\x)\}\frac{|f({\bf{x}})|^p}{\delta({\bf{x}})^p} d{\bf{x}}, \] for…

谱理论 · 数学 2011-05-27 A. A. Balinsky , W. D. Evans , R. T. Lewis

We prove certain generalization of Hardy's inequality where the "boundary defining function" is replaced by a polynomial defining a singular algebraic variety. An application is given on the existence of a small time heat trace expansion…

偏微分方程分析 · 数学 2010-05-25 Demetrios A. Pliakis

Multilinear trace restriction inequalities are obtained for Hardy's inequality. More generally, detailed development is given for new multilinear forms for Young's convolution inequality, and a new proof for the multilinear…

偏微分方程分析 · 数学 2013-11-27 William Beckner

In this paper some important inequalities are revisited. First, as motivation, we give another proof of the Hardy's inequality applying convenient vector fields as introduced by Mitidieri, see [6]. Then, we investigate a particular case of…

偏微分方程分析 · 数学 2010-07-14 Aldo Bazan , Wladimir Neves

[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

We prove a Hardy inequality for ultraspherical expansions by using a proper ground state representation. From this result we deduce some uncertainty principles for this kind of expansions. Our result also implies a Hardy inequality on…

经典分析与常微分方程 · 数学 2017-03-10 Alberto Arenas , Óscar Ciaurri , Edgar Labarga

We study some Hardy-type inequalities involving a general norm in $R^n$ and an anisotropic distance function to the boundary. The case of the optimality of the constants is also addressed.

偏微分方程分析 · 数学 2015-12-18 Francesco Della Pietra , Giuseppina di Blasio , Nunzia Gavitone

We establish various Hardy-type inequalities for the Dirichlet Laplacian in perturbed periodically twisted tubes of non-circular cross-sections. We also state conjectures about the existence of such inequalities in more general regimes,…

谱理论 · 数学 2015-07-31 Philippe Briet , Hiba Hammedi , David Krejcirik

We prove some extensions of Andrews inequality.

微分几何 · 数学 2020-11-02 Hao Fang , Biao Ma , Wei Wei

In the present paper we shall improve one dimensional weighted Hardy inequalities with one-sided boundary condition by adding sharp remainders. As an application, we shall establish n dimensional weighted Hardy inequalities in a bounded…

偏微分方程分析 · 数学 2020-12-17 Xiaojing Liu , Toshio Horiuchi , Hiroshi Ando

In the present paper we shall study a variational problem relating the weighted Hardy inequalities with sharp missing terms. As weights we treat non-doubling functions of the distance to the boundary of bounded domain.

偏微分方程分析 · 数学 2023-12-13 Hiroshi Ando , Toshio Horiuchi

There is a mathematical error in the first version of this paper. A new corrected version will be posted when the error is fixed, possibly with a modified title.

概率论 · 数学 2009-01-07 Carl Graham

In this short note, we improve the famous Reid Inequality related to linear operators.

泛函分析 · 数学 2017-04-25 Mohammed Hichem Mortad

We present a review of results that have been obtained in the past twenty-five years concerning the $L^p$-Hardy inequality with distance to the boundary. We concentrate on results where the best Hardy constant is either computed exactly or…

偏微分方程分析 · 数学 2023-11-15 Gerassimos Barbatis

Starting with a functional difficulty appeared in the paper \cite{vz00} by V\'azquez and Zuazua, we obtain new insights into the Hardy Inequality and the evolution problem associated to it by means of a reformulation of the problem.…

偏微分方程分析 · 数学 2011-03-01 J. L. Vázquez , N. B. Zographopoulos

In this paper we study some weak majorization properties with applications for the trees. A strongly notion of majorization is introduced and Hardy-Littlewood-Polya's inequality is generalized.

经典分析与常微分方程 · 数学 2014-12-17 Ionel Roventa

Based on a new idea of factorization, we prove an improved discrete Rellich inequality and discuss its optimality. We also give a conjecture on improved higher order discrete Hardy-like inequalities and formulate an open problem for the…

谱理论 · 数学 2022-06-23 Borbala Gerhat , David Krejcirik , Frantisek Stampach

We prove some sharp Hardy inequalities for domains with a spherical symmetry. In particular, we prove an inequality for domains of the unit $n$-dimensional sphere with a point singularity, and an inequality for functions defined on the…

偏微分方程分析 · 数学 2008-07-30 Francesco Chiacchio , Tonia Ricciardi

In this paper we establish a Hardy inequality for Laplace operators with Robin boundary conditions. For convex domains, in particular, we show explicitly how the corresponding Hardy weight depends on the coefficient of the Robin boundary…

谱理论 · 数学 2015-11-16 Hynek Kovarik , Ari Laptev