Results 21 to 30 of about 760,630 (259)

On the improvement of the Hardy inequality due to singular magnetic fields [PDF]

open access: yesCommunications in Partial Differential Equations, 2018
We establish magnetic improvements upon the classical Hardy inequality for two specific choices of singular magnetic fields. First, we consider the Aharonov-Bohm field in all dimensions and establish a sharp Hardy-type inequality that takes into account ...
L. Fanelli   +3 more
semanticscholar   +1 more source

Hardy inequalities [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
Here the following Hardy inequalities are studied \[ ∑ k = 0 m − 1 ∫ | ∇
openaire   +2 more sources

Hardy-type inequalities

open access: yesJournal of the European Mathematical Society, 2004
In this well-written paper, the authors study operators of the form $L=-\\Delta -µd^{-2}$, where $d(x)={\\rm dist}(x,\\Sigma)$, $µ\\in R$ and $\\Sigma \\subset R^{n}$. More precisely, they study inequalities which suggest that the operator $L$ has a positive first eigenvalue.
Davila, Juan, Dupaigne, Louis
openaire   +6 more sources

HARDY-TYPE INEQUALITIES [PDF]

open access: yesTaiwanese Journal of Mathematics, 2000
Hardy- and Paley-type inequalities are proved for \(n\)-dimensional Hermite and special Hermite expansions. However, there is a gap in the proof of the main theorem. In Proposition 3.1 the author should have investigated a sum of type \(\sum_{\mu_1,\ldots,\mu_n \in \mathbb N}\), though the sums \(\sum_{\mu_1,\ldots,\mu_n \leq \nu}\) and \(\sum_{\mu_1 ...
openaire   +2 more sources

Sharp Hardy-Sobolev Inequalities with General Weights and Remainder Terms

open access: yesJournal of Inequalities and Applications, 2009
We consider a class of sharp Hardy-Sobolev inequality, where the weights are functions of the distance from a surface. It is proved that the Hardy-Sobolev inequality can be successively improved by adding to the right-hand side a lower-order term with ...
Yaotian Shen, Zhihui Chen
doaj   +2 more sources

Overdetermined Hardy Inequalities

open access: yesJournal of Mathematical Analysis and Applications, 1997
The aim of the paper is to find necessary and sufficient conditions on the weights \(w\) and \(w_0\) for the validity of the higher-order Hardy inequality \[ \Biggl(\int^1_0| u|^qw_0\Biggr)^{1/q}\leq C\Biggl(\int^1_0| u^{(k+ 1)}|^p w\Biggr)^{1/p} \] on the class of all solutions of certain overdetermined boundary value problems.
Kufner, Alois, Sinnamon, Gordon
openaire   +1 more source

Critical Hardy–Sobolev inequalities

open access: yesJournal de Mathématiques Pures et Appliquées, 2007
We consider Hardy inequalities in $I R^n$, $n \geq 3$, with best constant that involve either distance to the boundary or distance to a surface of co-dimension ...
Filippas, S., Maz'ya, V., Tertikas, A.
openaire   +2 more sources

Fractional Hardy–Sobolev Inequalities with Magnetic Fields

open access: yesAdvances in Mathematical Physics, 2019
A fractional Hardy–Sobolev inequality with a magnetic field is studied in the present paper. Under appropriate conditions, the achievement of the best constant of the fractional magnetic Hardy–Sobolev inequality is established.
Min Liu, Fengli Jiang, Zhenyu Guo
doaj   +1 more source

Inequalities of Hardy Type via Superquadratic Functions with General Kernels and Measures for Several Variables on Time Scales

open access: yesJournal of Function Spaces, 2020
We use the properties of superquadratic functions to produce various improvements and popularizations on time scales of the Hardy form inequalities and their converses.
H. M. Rezk   +4 more
doaj   +1 more source

A New Extension of Hardy-Hilbert’s Inequality Containing Kernel of Double Power Functions

open access: yesMathematics, 2020
In this paper, we provide a new extension of Hardy-Hilbert’s inequality with the kernel consisting of double power functions and derive its equivalent forms.
Bicheng Yang, Shanhe Wu, Qiang Chen
doaj   +1 more source

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