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We derive sharp Adams inequalities for the Riesz and other potentials of functions with arbitrary compact support in R^n. Up to now such results were only known for a class of functions whose supports have uniformly bounded measure. We…

Analysis of PDEs · Mathematics 2015-07-17 Luigi Fontana , Carlo Morpurgo

We derive sharp Adams inequalities with exact growth condition for the Riesz potential as well as more general Riesz-like potentials on R^n. We also obtain Moser-Trudinger inequalities with exact growth condition for the fractional…

Analysis of PDEs · Mathematics 2022-11-02 Liuyu Qin

In 1988 Adams obtained sharp Moser-Trudinger inequalities on bounded domains of R^n. The main step was a sharp exponential integral inequality for convolutions with the Riesz potential. In this paper we extend and improve Adams' results to…

Analysis of PDEs · Mathematics 2011-01-25 Luigi Fontana , Carlo Morpurgo

In this paper, we prove a version of weighted inequalities of exponential type for fractional integrals with sharp constants in any domain of finite measure in $\mathbb{R}^{n}$. Using this we prove a sharp singular Adams inequality in high…

Analysis of PDEs · Mathematics 2011-12-30 Nguyen Lam , Guozhen Lu

We derive a sharp Moser-Trudinger inequality for the borderline Sobolev imbedding of W^{2,n/2}(B_n) into the exponential class, where B_n is the unit ball of R^n. The corresponding sharp results for the spaces W_0^{d,n/d}(\Omega) are well…

Functional Analysis · Mathematics 2011-02-10 Luigi Fontana , Carlo Morpurgo

Adams inequalities with exact growth conditions are derived for Riesz-like potentials on metric measure spaces. The results extend and improve those obtained recently on $\mathbb R^n$ by the second author, for Riesz-like convolution…

Analysis of PDEs · Mathematics 2023-12-22 Carlo Morpurgo , Liuyu Qin

We establish sharp pointwise inequalities for the Riesz potential and its gradient in $\mathbb{R}^{n}$ and indicate their usefulness for potential analysis, moment theory and other applications.

Functional Analysis · Mathematics 2023-12-06 Vladimir G. Tkachev

We establish sharp Adams type inequalities on Sobolev spaces $W^{\alpha, n/\alpha}(X)$ of any fractional order $\alpha< n$ on Riemannian symmetric space $X$ of noncompact type with dimension $n$ and of arbitrary rank. We also establish…

Functional Analysis · Mathematics 2021-06-17 Mithun Bhowmik

We derive Adams inequalities for potentials on general measure spaces, extending and improving previous results obtained by the authors. The integral operators involved, which we call "Riesz subcritical", have kernels whose decreasing…

Analysis of PDEs · Mathematics 2019-09-17 Luigi Fontana , Carlo Morpurgo

The main purpose of our paper is to prove sharp Adams-type inequalities in unbounded domains of $\mathbb{R}^{n}$ for the Sobolev space $W^{m,\frac{n}{m}}\left(\mathbb{R} ^{n}\right)$ for any positive integer $m$ less than $n$. Our results…

Analysis of PDEs · Mathematics 2011-12-30 Nguyen Lam , Guozhen Lu

We derive sharp Moser-Trudinger inequalities on the CR sphere. The first type is in the Adams form, for powers of the sublaplacian and for general spectrally defined operators on the space of CR-pluriharmonic functions. We will then obtain…

Analysis of PDEs · Mathematics 2012-10-31 Thomas P. Branson , Luigi Fontana , Carlo Morpurgo

We study a sharp fractional Moser-Trudinger type inequality in dimension 1, its compactness properties and the critical points of a functional associeted to the inequality.

Analysis of PDEs · Mathematics 2016-08-26 Stefano Iula , Ali Maalaoui , Luca Martinazzi

Extending several works, we prove a general Adams-Moser-Trudinger type inequality for the embedding of Bessel-potential spaces $\tilde H^{\frac{n}{p},p}(\Omega)$ into Orlicz spaces for an arbitrary domain $\Omega\subset \mathbb{R}^n$ with…

Analysis of PDEs · Mathematics 2016-08-26 Luca Martinazzi

We derive sharp Sobolev embeddings on a class of Sobolev spaces with potential weights without assuming any boundary conditions. Moreover, we consider the Adams-type inequalities for the borderline Sobolev embedding into the exponential…

Analysis of PDEs · Mathematics 2024-10-24 João Marcos do Ó , Guozhen Lu , Raoní Ponciano

Let $M$ be a complete, simply connected Riemannian manifold with negative curvature. We obtain some Moser-Trudinger inequalities with sharp constants on $M$.

Analysis of PDEs · Mathematics 2024-07-03 Qiaohua Yang , Dan Su , Yinying Kong

We establish a family of sharp Sobolev trace inequalities involving the $W^{k,2}(\mathbb{R}_+^{n+1},y^a)$-norm. These inequalities are closely related to the realization of fractional powers of the Laplacian on…

Analysis of PDEs · Mathematics 2022-11-16 Jeffrey S. Case

We give a new proof of the almost sharp Moser-Trudinger inequality on compact Riemannian manifolds based on the sharp Moser inequality on Euclidean spaces. In particular we can lower the smoothness requirement of the metric and apply the…

Analysis of PDEs · Mathematics 2021-08-25 Fengbo Hang

We obtain a characterization of the weighted inequalities for the Riesz transforms on weighted local Morrey spaces. The condition is sufficient for the boundedness on the same spaces of all Calder\'on-Zygmund operators suitably defined on…

Functional Analysis · Mathematics 2021-10-28 Javier Duoandikoetxea , Marcel Rosenthal

We study the sharp constant in the Morrey inequality for fractional Sobolev-Slobodecki\u{\i} spaces on the whole $\mathbb{R}^N$. By generalizing a recent work by Hynd and Seuffert, we prove existence of extremals, together with some…

Analysis of PDEs · Mathematics 2023-09-13 Lorenzo Brasco , Francesca Prinari , Firoj Sk

We establish a sharp Sobolev trace inequality on the Siegel domain $\Omega_{n+1}$ involving the weighted norm-$W^{2,2}(\Omega_{n+1}, \rho^{1-2[\gamma]})$. The inequality is closely related the realization of fractional powers of the…

Analysis of PDEs · Mathematics 2023-04-17 Gunhee Cho , Zetian Yan
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