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We prove Hardy inequalities for the conformally invariant fractional powers of the sublaplacian on the Heisenberg group $\mathbb{H}^n$. We prove two versions of such inequalities depending on whether the weights involved are non-homogeneous…

Classical Analysis and ODEs · Mathematics 2016-07-15 L. Roncal , S. Thangavelu

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.

Analysis of PDEs · Mathematics 2010-02-22 Michael Loss , Craig Sloane

In this paper we study the extension problem for the sublaplacian on a $H$-type group and use the solutions to prove trace Hardy and Hardy inequalities for fractional powers of the sublaplacian.

Analysis of PDEs · Mathematics 2017-08-31 L. Roncal , S. Thangavelu

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

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 calculate the regional fractional Laplacian on some power function on an interval. As an application, we prove Hardy inequality with an extra term for the fractional Laplacian on the interval with the optimal constant. As a result, we…

Analysis of PDEs · Mathematics 2011-03-18 Bartłomiej Dyda

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 prove Hardy-type inequalities for a fractional Dunkl--Hermite operator which incidentally give Hardy inequalities for the fractional harmonic oscillator as well. The idea is to use $h$-harmonic expansions to reduce the problem in the…

Classical Analysis and ODEs · Mathematics 2016-09-06 Ó. Ciaurri , L. Roncal , S. Thangavelu

We prove fractional Sobolev-Poincar\'e inequalities, capacitary versions of fractional Poincar\'e inequalities, and pointwise and localized fractional Hardy inequalities in a metric space equipped with a doubling measure. Our results…

Classical Analysis and ODEs · Mathematics 2021-08-17 Bartłomiej Dyda , Juha Lehrbäck , Antti V. Vähäkangas

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 derive Hardy type inequalities for a large class of sub-elliptic operators that belong to the class of $\Delta_\lambda$-Laplacians and find explicit values for the constants involved. Our results generalize previous inequalities obtained…

Analysis of PDEs · Mathematics 2015-03-09 A. E. Kogoj , S. Sonner

In this paper we study an extension problem for the Laplace-Beltrami operator on Riemannian symmetric spaces of noncompact type and use the solution to prove Hardy-type inequalities for fractional powers of the Laplace-Beltrami operator.…

Functional Analysis · Mathematics 2021-01-22 Mithun Bhowmik , Sanjoy Pusti

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…

Analysis of PDEs · Mathematics 2023-04-19 Rupert L. Frank , Konstantin Merz , Heinz Siedentop

The main purpose of this article is to obtain (weighted) fractional Hardy inequalities with a remainder and fractional Hardy-Sobolev-Maz'ya inequalities valid for $1<p<2$.

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

We prove an optimal Hardy inequality for the fractional Laplacian on the half-space.

Analysis of PDEs · Mathematics 2008-07-14 Krzysztof Bogdan , Bartłomiej Dyda

With rectangular doubling weight, a~generalized Hardy-Littlewood-Sobolev inequality for rectangular fractional integral operators is verified. The result is a~nice application of $M$-linear embedding theorem for dyadic rectangles.

Classical Analysis and ODEs · Mathematics 2023-09-28 Hitoshi Tanaka

First the Hardy and Rellich inequalities are defined for the submarkovian operator associated with a local Dirichlet form. Secondly, two general conditions are derived which are sufficient to deduce the Rellich inequality from the Hardy…

Analysis of PDEs · Mathematics 2017-01-23 Derek W. Robinson

We use the Morrey norm estimate for the imaginary power of the Laplacian to prove an interpolation inequality for the fractional power of the Laplacian on Morrey spaces. We then prove a Hardy-type inequality and use it together with the…

Analysis of PDEs · Mathematics 2021-05-13 Hendra Gunawan , Denny Ivanal Hakim , Eiichi Nakai , Yoshihiro Sawano

In this article we prove both norm and modular Hardy inequalities for a class functions in one-dimensional fractional Orlicz-Sobolev spaces.

Analysis of PDEs · Mathematics 2020-09-15 Ariel Salort

As our main result we prove a variant of the fractional Hardy-Sobolev-Maz'ya inequality for half spaces. This result contains a complete answer to a recent open question by Musina and Nazarov. In the proof we apply a new version of the…

Classical Analysis and ODEs · Mathematics 2017-09-12 Bartłomiej Dyda , Juha Lehrbäck , Antti V. Vähäkangas
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