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In this paper, we improve the $L^p$-Rellich and Hardy-Rellich inequalities in the setting of radial Baouendi-Grushin vector fields. We establish an identity relating the subcritical and critical Hardy inequalities, thereby demonstrating…

Analysis of PDEs · Mathematics 2025-05-19 Avas Banerjee , Riju Basak , Prasun Roychowdhury

For Baouendi-Grushin vector fields, we prove Hardy, Hardy-Rellich, and Rellich identities and inequalities with sharp constants. Our explicit remainder terms significantly improve than those found in the literature. Our arguments are built…

Analysis of PDEs · Mathematics 2025-03-21 Debdip Ganguly , K. Jotsaroop , Prasun Roychowdhury

In this paper, we establish the weighted anisotropic Hardy and Rellich type inequalities with boundary terms for general (real-valued) vector fields. As consequences, we derive new as well as many of the fundamental Hardy and Rellich type…

Analysis of PDEs · Mathematics 2018-08-20 Michael Ruzhansky , Bolys Sabitbek , Durvudkhan Suragan

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

This paper is primarily devoted to a class of interpolation inequalities of Hardy and Rellich types on the Heisenberg group $\mathbb{H}^n$. Consequently, several weighted Hardy type, Heisenberg-Pauli-Weyl uncertainty principle and…

Analysis of PDEs · Mathematics 2022-09-14 Abimbola Abolarinwa , Michael Ruzhansky

In this paper, we prove several new Hardy type inequalities (such as the weighted Hardy inequality, weighted Rellich inequality, critical Hardy inequality and critical Rellich inequality) for radial derivations (i.e., the derivation along…

Functional Analysis · Mathematics 2017-09-19 Van Hoang Nguyen

We revisit weighted Hardy-type inequalities employing an elementary ad hoc approach that yields explicit constants. We also discuss the infinite sequence of power weighted Birman-Hardy-Rellich-type inequalities and derive an operator-valued…

Classical Analysis and ODEs · Mathematics 2019-04-23 Chian Yeong Chuah , Fritz Gesztesy , Lance L. Littlejohn , Tao Mei , Isaac Michael , Michael M. H. Pang

When studying the weighted Hardy-Rellich inequality in $L^2$ with the full gradient replaced by the radial derivative the best constant becomes trivially larger or equal than in the first situation. Our contribution is to determine the new…

Analysis of PDEs · Mathematics 2024-06-25 Cristian Cazacu , Irina Fidel

We establish existence of weighted Hardy and Rellich inequalities on the spaces $L_p(\Omega)$ where $\Omega= \Ri^d\backslash K$ with $K$ a closed convex subset of $\Ri^d$. Let $\Gamma=\partial\Omega$ denote the boundary of $\Omega$ and…

Analysis of PDEs · Mathematics 2020-02-19 Derek W. Robinson

In this paper we prove the Hardy inequalities for the quadratic form of the Laplacian with the Landau Hamiltonian magnetic field. Moreover, we obtain Poincar\'e type inequality and inequalities with more general families of weights, all…

Functional Analysis · Mathematics 2017-05-02 Ari Laptev , Michael Ruzhansky , Nurgissa Yessirkegenov

The motive of this note is twofold. Inspired by the recent development of a new kind of Hardy inequality, here we discuss the corresponding Hardy-Rellich and Rellich inequality versions in the integral form. The obtained sharp Hardy-Rellich…

Functional Analysis · Mathematics 2025-05-14 Tohru Ozawa , Prasun Roychowdhury , Durvudkhan Suragan

We find necessary and sufficient conditions for the validity of weighted Rellich inequalities in Lp for functions in bounded domains vanishing at the boundary. General operators like L = Delta+ c\|x|^2x nabla-b\|x|^2 are considered.…

Analysis of PDEs · Mathematics 2019-07-25 G. Metafune , L. Negro , M. Sobajima , C. Spina

[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…

Differential Geometry · Mathematics 2024-11-13 Shouvik Datta Choudhury

In this paper, we study the asymptotic behaviour of the sharp constant in discrete Hardy and Rellich inequality on the lattice $\mathbb{Z}^d$ as $d \rightarrow \infty$. In the process, we proved some Hardy-type inequalities for the…

Functional Analysis · Mathematics 2023-01-13 Shubham Gupta

We investigate necessary and sufficient conditions on the weights for the Hardy-Rellich inequalities to hold, and propose a new way to use the notion of Bessel pair to establish the optimal Hardy-Rellich type inequalities. Our results…

Analysis of PDEs · Mathematics 2023-10-11 Anh Xuan Do , Nguyen Lam , Guozhen Lu

We prove local refined versions of Hardy's and Rellich's inequalities as well as of uncertainty principles for sums of squares of vector fields on bounded sets of smooth manifolds under certain assumptions on the vector fields. We also give…

Analysis of PDEs · Mathematics 2016-03-30 Michael Ruzhansky , Durvudkhan Suragan

We prove some Hardy type inequalities related to quasilinear second order degenerate elliptic differential operators L_p(u):=-\nabla_L^*(\abs{\nabla_L u}^{p-2}\nabla_L u). If \phi is a positive weight such that -L_p\phi>= 0, then the Hardy…

Analysis of PDEs · Mathematics 2007-05-23 Lorenzo D'Ambrosio

In this paper we establish improved Hardy and Rellich type inequalities on Riemannian manifold $M$. Furthermore, we also obtain sharp constant for the improved Hardy inequality and explicit constant for the Rellich inequality on hyperbolic…

Analysis of PDEs · Mathematics 2007-05-23 Ismail Kombe , Murad Ozaydin

In this work, we prove a critical version of a Hardy-Rellich type inequality. We show that for $N\geq 1$ there exists a constant $C_N>0$ such that \[ \int_{\mathbb R^N}\left|\nabla\left(\frac{u(x)}{|x|}\right)\right|^N\,\mathrm{d}x\leq…

Analysis of PDEs · Mathematics 2026-05-18 Hernán Castro

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…

Analysis of PDEs · Mathematics 2010-07-14 Aldo Bazan , Wladimir Neves
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