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Related papers: Rellich inequalities for sub-Laplacians with drift

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We study Rellich inequalities associated to higher-order elliptic operators in the Euclidean space. The inequalities are expressed in terms of an associated Finsler metric. In the case of half-spaces we obtain the sharp constant while for a…

Analysis of PDEs · Mathematics 2021-08-06 Gerassimos Barbatis , Miltiadis Paschalis

In this paper, we establish discrete Hardy-Rellich inequalities on $\mathbb{N}$ with $\Delta^\frac{\ell}{2}$ and optimal constants, for any $\ell \geq 1$. As far as we are aware, these sharp inequalities are new for $\ell \geq 3$. Our…

Analysis of PDEs · Mathematics 2023-12-27 Xia Huang , Dong Ye

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

In this note we formulate recent stability results for Hardy inequalities in the language of Folland and Stein's homogeneous groups. Consequently, we obtain remainder estimates for Rellich type inequalities on homogeneous groups. Main…

Functional Analysis · Mathematics 2018-11-14 Michael Ruzhansky , Durvudkhan Suragan

We prove comparison theorems for the horizontal Laplacian of the Riemannian distance in the context of Riemannian foliations with minimal leaves. This general framework generalizes previous works and allow us to consider the sub-Laplacian…

Differential Geometry · Mathematics 2025-09-17 Fabrice Baudoin

This paper concerns the boundary behavior of solutions of certain fully nonlinear equations with a general drift term. We elaborate on the non-homogeneous generalized Harnack inequality proved by the second author in (Julin, ARMA -15), to…

Analysis of PDEs · Mathematics 2020-01-22 Benny Avelin , Vesa Julin

We consider the Riesz transforms of arbitrary order associated with the twisted Laplacian with drift on $\mathbb{C}^n$ and study their strong-type $(p, p)$, $1<p<\infty$, and weak-type $(1, 1)$ boundedness.

Classical Analysis and ODEs · Mathematics 2026-02-17 Nishta Garg , Rahul Garg

In this paper, we study the spectrum of the drift Laplacian on Ricci expanders. We show that the spectrum is discrete when the potential function is proper, and we show that the hypothesis on the properness of the potential function cannot…

Differential Geometry · Mathematics 2024-10-11 Helton Leal , Matheus Vieira , Detang Zhou

We consider the best constant in the Rellich-Hardy inequality (with a radial power weight) for curl-free vector fields on $\mathbb{R}^N$, originally found by Tertikas-Zographopoulos \cite{Tertikas-Z} for unconstrained fields. This…

Analysis of PDEs · Mathematics 2021-01-07 Naoki Hamamoto , Futoshi Takahashi

We obtain a series improvement to higher-order $L^p$-Rellich inequalities on a Riemannian manifold $M$. The improvement is shown to be sharp as each new term of the series is added.

Analysis of PDEs · Mathematics 2007-05-23 G. Barbatis

In the Engel group with its Carnot group structure we study subsets of locally finite subRiemannian perimeter and possessing constant subRiemannian normal. We prove the rectifiability of such sets: more precisely we show that, in some…

Analysis of PDEs · Mathematics 2012-02-01 Costante Bellettini , Enrico Le Donne

This paper is concerned with nonlinear elliptic equations in nondivergence form where the operator has a first order drift term which is not Lipschitz continuous. Under this condition the equations are nonhomogeneous and nonnegative…

Analysis of PDEs · Mathematics 2019-06-27 Vesa Julin

In this short survey, we derive some weyl-type universal inequalities of eigenvalues of the Laplacian on a closed Riemannian manifold of nonnegative Ricci curvature. We also give upper bounds for the $L_{\infty}$ norm of eigenfunctions of…

Differential Geometry · Mathematics 2023-11-08 Kei Funano

In this paper, we derive "universal" inequalities for the sums of eigenvalues of the Hodge de Rham Laplacian on Euclidean closed Submanifolds and of eigenvalues of the Kohn Laplacian on the Heisenberg group. These inequalities generalize…

Spectral Theory · Mathematics 2010-12-06 Said Ilias , Makhoul Ola

We establish two universal inequalities for Dirichlet eigenvalues of the Laplacian on a Euclidean convex domain.

Spectral Theory · Mathematics 2026-04-14 Kei Funano

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

We present a unified approach to obtain Hardy-type inequalities in the context of nilpotent Lie groups with sharp constants. The unified methodology employed herein allows for exploration of the sharp Hardy inequalities on various Lie group…

Functional Analysis · Mathematics 2023-08-04 Durvudkhan Suragan , Nurgissa Yessirkegenov

We investigate uniqueness, in suitable weighted Lebesgue spaces, of solutions to a class of fractional parabolic and elliptic equations with a drift.

Analysis of PDEs · Mathematics 2022-04-21 Giulia Meglioli , Fabio Punzo

This work provides an extension of parts of the classical finite dimensional sub-elliptic theory in the context of infinite dimensional compact connected metrizable groups. Given a well understood and well behaved bi-invariant Laplacian,…

Probability · Mathematics 2025-03-03 Qi Hou , Laurent Saloff-Coste

Some of the most known integral inequalities are the Sobolev, Hardy and Rellich inequalities in Euclidean spaces. In the context of submanifolds, the Sobolev inequality was proved by Michael-Simon and Hoffman-Spruck. Since then, a sort of…

Differential Geometry · Mathematics 2016-11-16 Marcio Batista , Heudson Mirandola , Feliciano Vitorio