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The aim of this paper is to show a possibility to identify multivariate distribution by means of specially constructed one-dimensional random variable. We give some inequalities which may appear to helpful for a construction of multivariate…

Statistics Theory · Mathematics 2018-08-17 Lev B. Klebanov , Irina V. Volchenkova

We revisit Hardy's inequality in the scope of regular Dirichlet forms following an analytical method. We shall give an alternative necessary and sufficient condition for the occurrence of Hardy's inequality. A special emphasis will be given…

Functional Analysis · Mathematics 2009-04-02 Nedra Belhadjrhouma , Ali BenAmor

We prove an inequality of Hardy type for functions in Triebel-Lizorkin spaces. The distance involved is being measured to a given Ahlfors d-regular set in R^n, with n-1<d<n. As an application of the Hardy inequality, we consider boundedness…

Classical Analysis and ODEs · Mathematics 2012-09-27 Lizaveta Ihnatsyeva , Antti V. Vähäkangas

We discuss class of doubled geometry models with diagonal metrics. Based on the analysis of known examples we formulate a hypothesis that supports treating them as modified bimetric gravity theories. Certain steps towards the generic case…

Mathematical Physics · Physics 2022-10-19 Arkadiusz Bochniak

Assorted weighted shifts over finite rooted directed trees are studied. Their complex symmetry is characterized.

Functional Analysis · Mathematics 2025-10-23 Piotr Budzyński

In this paper, we consider the first order Hardy inequalities using simple equalities. This basic setting not only permits to derive quickly many well-known Hardy inequalities with optimal constants, but also supplies improved or new…

Analysis of PDEs · Mathematics 2021-12-14 Xia Huang , Dong Ye

In this short note we would like to show that one can use Davies's Hardy inequality to rederive well-known results of Lieb and Rozenblum.

Classical Analysis and ODEs · Mathematics 2022-04-01 Rupert L. Frank , Simon Larson

Recently, the so-called Hermite-Hadamard inequality for (operator) convex functions with one variable has known extensive several developments by virtue of its nice properties and various applications. The fundamental target of this paper…

Classical Analysis and ODEs · Mathematics 2024-05-22 Mustapha Raissouli , Lahcen Tarik , Mohamed Chergui

We look at thin interpolating sequences and the role they play in uniform algebras, Hardy spaces, and model spaces.

Complex Variables · Mathematics 2015-10-06 Pamela Gorkin , Brett. D. Wick

As a consequence of the Integral Test we find a triple inequality which bounds up and down both a series with respect to its corresponding improper integral, and reciprocally an improper integral with respect to its corresponding series.

General Mathematics · Mathematics 2007-05-23 Florentin Smarandache

In this review paper, we survey Hardy type inequalities from the point of view of Folland and Stein's homogeneous groups. Particular attention is paid to Hardy type inequalities on stratified groups which give a special class of homogeneous…

Functional Analysis · Mathematics 2022-01-17 Durvudkhan Suragan

New Hardy type inequality with double singular kernel and with additional logarithmic term in a ball $B\subset \mathbb{R}^n$ is proved. As an application an estimate from below of the first eigenvalue for Dirichlet problem of p-Laplacian in…

Analysis of PDEs · Mathematics 2023-08-08 Nikolai Kutev , Tsviatko Rangelov

We study possible Lie and non-classical reductions of multidimensional wave equations and the special classes of possible reduced equations - their symmetries and equivalence classes. Such investigation allows to find many new conditional…

Mathematical Physics · Physics 2010-11-17 Irina Yehorchenko

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

We establish a quantitative weighted inequality for the bilinear rough singular integral, where the bound is controlled by the cube of the weight constant.

Classical Analysis and ODEs · Mathematics 2017-08-29 Peng Chen , Danqing He , Liang Song

The principal aim of this paper is to extend Birman's sequence of integral inequalities originally obtained in 1961, and containing Hardy's and Rellich's inequality as special cases, to a sequence of inequalities that incorporates power…

Classical Analysis and ODEs · Mathematics 2020-04-01 Fritz Gesztesy , Lance L. Littlejohn , Isaac Michael , Michael M. H. Pang

Inference based on the penalized density ratio model is proposed and studied. The model under consideration is specified by assuming that the log--likelihood function of two unknown densities is of some parametric form. The model has been…

Statistics Theory · Mathematics 2008-07-17 Konstantinos Fokianos

We consider the Dirichlet Laplacian in infinite two-dimensional strips defined as uniform tubular neighbourhoods of curves on ruled surfaces. We show that the negative Gauss curvature of the ambient surface gives rise to a Hardy inequality…

Spectral Theory · Mathematics 2007-05-23 David Krejcirik

Identifying the causes of a model's unfairness is an important yet relatively unexplored task. We look into this problem through the lens of training data - the major source of unfairness. We ask the following questions: How would the…

Machine Learning · Computer Science 2024-02-20 Yuanshun Yao , Yang Liu

We investigate the existence of closed planar loops with prescribed curvature. Our approach is variational, and relies on a Hardy type inequality and its associated functional space.

Analysis of PDEs · Mathematics 2023-10-24 Gabriele Cora , Roberta Musina