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In this short article we obtain some necessary conditions for a so-called fractional Hardy-Sobolev's inequalities in multidimensional case. We also give some examples to show the sharpness of these inequalities.

Functional Analysis · Mathematics 2011-08-08 E. Ostrovsky , L. Sirota

We prove a fractional version of the Hardy--Sobolev--Maz'ya inequality for arbitrary domains and $L^p$ norms with $p\geq 2$. This inequality combines the fractional Sobolev and the fractional Hardy inequality into a single inequality, while…

Functional Analysis · Mathematics 2011-09-30 Bartłomiej Dyda , Rupert L. Frank

We investigate the sharp constant for weighted fractional Hardy inequalities with the singularity on a flat submanifold of codimension $k$, where $1\leq k<d$. We also prove a weighted fractional Hardy inequality with a remainder. Using this…

Analysis of PDEs · Mathematics 2026-01-05 Michał Kijaczko , Vivek Sahu

We prove several Sobolev inequalities, which are then used to establish a fractional Hardy-Sobolev- Maz'ya inequality on the upper halfspace.

Functional Analysis · Mathematics 2015-03-17 Craig A. Sloane

We establish fractional Hardy inequality on bounded domains in $\mathbb{R}^{d}$ with inverse of distance function from smooth boundary of codimension $k$, where $k=2, \dots,d$, as weight function. The case $sp=k$ is the critical case, where…

Analysis of PDEs · Mathematics 2026-02-13 Adimurthi , Prosenjit Roy , Vivek Sahu

We determine the sharp constant in the Hardy inequality for fractional Sobolev spaces on half-spaces. Our proof relies on a non-linear and non-local version of the ground state representation.

Functional Analysis · Mathematics 2009-06-09 Rupert L. Frank , Robert Seiringer

In this paper we establish several Hardy and Hardy-Sobolev type inequalities with homogeneous weights on the first orthant $\displaystyle \mathbb{R}_{*}^n:=\{(x_1, \ldots, x_n):x_1>0, \ldots, x_n>0 \}$. We then use some of them to produce…

Analysis of PDEs · Mathematics 2021-08-11 I. Kömbe , S. Bakım , R. Tellioğlu Balekoğlu

We extend the work of Dyda and Kijaczko by establishing the corresponding weighted fractional Hardy inequalities with singularities on any flat submanifolds. While they derived weighted fractional Hardy inequalities with singularities at a…

Analysis of PDEs · Mathematics 2026-02-11 Vivek Sahu

We obtain sharp fractional Hardy inequalities for the half-space and for convex domains. We extend the results of Bogdan and Dyda and of Loss and Sloane to the setting of Sobolev-Bregman forms.

Analysis of PDEs · Mathematics 2026-01-05 Michał Kijaczko , Julia Lenczewska

We present simple proofs of a discrete fractional and non-fractional Hardy inequality, Our constants are explicit, but not optimal. In the class of power weights, we get a complete picture of when the non-fractional Hardy inequality holds,…

Functional Analysis · Mathematics 2025-06-18 Bartłomiej Dyda

We investigate the weighted fractional order Hardy inequality $$ \int_{\Omega}\int_{\Omega}\frac{|f(x)-f(y)|^{p}}{|x-y|^{d+sp}}\text{dist}(x,\partial\Omega)^{-\alpha}\text{dist}(y,\partial\Omega)^{-\beta}\,dy\,dx\geq…

Analysis of PDEs · Mathematics 2026-01-05 Bartłomiej Dyda , Michał Kijaczko

The aim of this paper is to obtain new Hardy inequalities with double singular weights - at an interior point and on the boundary of the domain. These inequalities give us the possibility to derive estimates from below of the first…

Analysis of PDEs · Mathematics 2020-10-02 Nikolai Kutev , Tsviatko Rangelov

Inspired by the work of Cossetti and D'Arca [CD25], we show that the general weighted $L^{p}$-Hardy type inequalities [CD25, Theorems 1.1 and 1.2] and the corresponding identities hold for all $1<p<\infty$, thus extending their results…

Analysis of PDEs · Mathematics 2026-03-06 Yerkin Shaimerdenov , Nurgissa Yessirkegenov , Amir Zhangirbayev

This is the first in our series of papers concerning some Hardy-Littlewood-Sobolev type inequalities. In the present paper, the main objective is to establish the following sharp reversed HLS inequality in the whole space $\mathbb R^n$…

Analysis of PDEs · Mathematics 2018-08-31 Quôc-Anh Ngô , Van Hoang Nguyen

In the present paper we shall establish n-dimensional Hardy's inequalities with non-doubling weight functions of the distance to the boundary, where the boundary is a $C^2$ class bounded domain of $R^N$. This work is essentially based on…

Analysis of PDEs · Mathematics 2022-06-28 Toshio Horiuchi

We establish some qualitative properties of minimizers in the fractional Hardy--Sobolev inequalities of arbitrary order.

Analysis of PDEs · Mathematics 2020-09-25 Roberta Musina , Alexander I. Nazarov

In this work we establish trace Hardy and trace Hardy-Sobolev-Maz'ya inequalities with best Hardy constants, for domains satisfying suitable geometric assumptions such as mean convexity or convexity. We then use them to produce fractional…

Analysis of PDEs · Mathematics 2015-05-30 Stathis Filippas , Luisa Moschini , Achilles Tertikas

We provide a general framework for fractional Hardy inequalities. Our framework covers, for instance, fractional inequalities related to the Dirichlet forms of some L\'evy processes, and weighted fractional inequalities on irregular open…

Classical Analysis and ODEs · Mathematics 2021-11-18 Bartłomiej Dyda , Antti V. Vähäkangas

The main aim of this paper to provide several scales of equivalent conditions for the bilinear Hardy inequalities in the case $1< q, p_1, p_2<\infty$ with $q \geq \max(p_1,p_2)$.

Functional Analysis · Mathematics 2022-07-20 Amiran Gogatishvili , Pankaj Jain , Saikat Kanjilal

In this work we improve the sharp Hardy inequality in the case $p>n$ by adding an optimal weighted Hoelder semi-norm. To achieve this we first obtain a local improvement. We also obtain a refinement of both the Sobolev inequality for $p>n$…

Analysis of PDEs · Mathematics 2013-10-14 Georgios Psaradakis
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