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In this work, we consider weighted anisotropic Hardy inequalities and trace Hardy inequalities involving a general Finsler metric. We follow a unifying approach, by establishing first a sharp interpolation between them, extending the…

Analysis of PDEs · Mathematics 2024-12-30 Konstantinos Tzirakis

This paper studies the Hardy-type inequalities on the intervals (may be infinite) with two weights, either vanishing at two endpoints of the interval or having mean zero. For the first type of inequalities, in terms of new isoperimetric…

Probability · Mathematics 2012-06-25 Mu-Fa Chen

We characterize positive critical Hardy weights for general Laplacians on weighted graphs. We then apply this result to fractional Laplacians on general graphs and use the characterization to identify an optimal Hardy weight under suitable…

Mathematical Physics · Physics 2026-05-20 Philipp Hake , Matthias Keller , Felix Pogorzelski

We study the Cauchy problem for the inhomogeneous Hartree equation in this paper. Although its well-posedness theory has been extensively studied in recent years, much less is known compared to the classical Hartree model of homogeneous…

Analysis of PDEs · Mathematics 2023-12-06 Seongyeon Kim , Yoonjung Lee , Ihyeok Seo

We establish a characterization of the Hardy spaces on the homogeneous groups in terms of the Littlewood-Paley functions. The proof is based on vector-valued inequalities shown by applying the Peetre maximal function.

Classical Analysis and ODEs · Mathematics 2019-05-13 Shuichi Sato

In this paper, We establish the weighted Poincar\'{e} inequalities and Log-Sobolev inequalities for Cauchy distributions with optimal weight functions.

Probability · Mathematics 2011-03-23 Zhengliang Zhang , Bin Qian , Wei Liu

In this paper, we will prove several new inequalities of Hardy's types with explicit constants. The main results will be proved by making use of some generalizations of Opial's type inequalities and H\"older's inequality. To the best of the…

Classical Analysis and ODEs · Mathematics 2011-12-21 S. H. Saker

In this paper we establish a Hardy inequality for Laplace operators with Robin boundary conditions. For convex domains, in particular, we show explicitly how the corresponding Hardy weight depends on the coefficient of the Robin boundary…

Spectral Theory · Mathematics 2015-11-16 Hynek Kovarik , Ari Laptev

We study finite sections of weighted Hardy's inequality following the approach of De Bruijn. Similar to the unweighted case, we obtain an asymptotic expression for the optimal constant.

Classical Analysis and ODEs · Mathematics 2007-12-12 Peng Gao

We study the Hardy identities and inequalities on Cartan-Hadamard manifolds using the notion of a Bessel pair. These Hardy identities offer significantly more information on the existence/nonexistence of the extremal functions of the Hardy…

Analysis of PDEs · Mathematics 2021-03-25 J. Flynn , N. Lam , G. Lu , S. Mazumdar

We derive an improved Poincar\'e inequality in connection with the Babu\v{s}ka-Aziz and Friedrichs-Velte inequalities for differential forms by estimating the domain specific optimal constants figuring in the respective inequalities with…

Analysis of PDEs · Mathematics 2020-04-10 Sándor Zsuppán

Consider a discrete uniformly elliptic divergence form equation on the $d$ dimensional lattice $\Z^d$ with random coefficients. In [3] rate of convergence results in homogenization and estimates on the difference between the averaged…

Analysis of PDEs · Mathematics 2014-02-26 Joseph G. Conlon , Arash Fahim

We study generalized Poincar\'e inequalities. We prove that if a function satisfies a suitable inequality of Poincar\'e type, then the Hardy-Littlewood maximal function also obeys a meaningful estimate of similar form. As a by-product, we…

Classical Analysis and ODEs · Mathematics 2021-02-23 Olli Saari

In this paper, we discuss the Hardy inequality with bilinear operators on general metric measure spaces. We give the characterization of weights for the bilinear Hardy inequality to hold on general metric measure spaces having polar…

Functional Analysis · Mathematics 2024-04-15 Michael Ruzhansky , Anjali Shriwastawa , Daulti Verma

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

In this paper we study some improvements of the classical Hardy inequality. We add to the right hand side of the inequality a term which depends on some Lorentz norms of $u$ or of its gradient and we find the best values of the constants…

Analysis of PDEs · Mathematics 2010-02-17 Angelo Alvino , Roberta Volpicelli , Bruno Volzone

In the context of Hardy inequalities for the fractional Laplacian $(-\Delta_{\mathbb{N}})^{\sigma}$ on the discrete half-line $\mathbb{N}$, we provide an optimal Hardy-weight $W^{\mathrm{op}}_{\sigma}$ for exponents…

Analysis of PDEs · Mathematics 2025-07-10 Ujjal Das , Rubén de la Fuente-Fernández

We study topological Poincar\'e type inequalities on general graphs. We characterize graphs satisfying such inequalities and then turn to the best constants in these inequalities. Invoking suitable metrics we can interpret these constants…

Functional Analysis · Mathematics 2018-01-30 Daniel Lenz , Marcel Schmidt , Peter Stollmann

We derive tight bounds on the expected weights of several combinatorial optimization problems for random point sets of size $n$ distributed among the leaves of a balanced hierarchically separated tree. We consider {\it monochromatic} and…

Discrete Mathematics · Computer Science 2013-07-29 Béla Csaba , Thomas A. Plick , Ali Shokoufandeh

We prove an improved version of Poincar\'e-Hardy inequality in suitable subspaces of the Sobolev space on the hyperbolic space via Bessel pairs. As a consequence, we obtain a new Hardy type inequality with an improved constant (than the…

Analysis of PDEs · Mathematics 2023-03-20 Debdip Ganguly , Prasun Roychowdhury