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We prove some Hardy-type inequalities via an approach that involves constructing auxiliary sequences.

Classical Analysis and ODEs · Mathematics 2015-06-26 Peng Gao

In information theory, the well-known log-sum inequality is a fundamental tool which indicates the non-negativity for the relative entropy. In this article, we establish a set of inequalities which are similar to the log-sum inequality…

Functional Analysis · Mathematics 2022-11-08 Supriyo Dutta , Shigeru Furuichi

Quantum coherence and entanglement are two key features in quantum mechanics and play important roles in quantum information processing and quantum computation. We provide a general triangle-like inequality satisfied by the $l_1$-norm…

Quantum Physics · Physics 2018-11-21 Zhi-Xiang Jin , Xianqing Li-Jost , Shao-Ming Fei

Given a complex, elliptic coefficient function we investigate for which values of $p$ the corresponding second-order divergence form operator, complemented with Dirichlet, Neumann or mixed boundary conditions, generates a strongly…

Analysis of PDEs · Mathematics 2019-03-18 A. F. M. ter Elst , R. Haller-Dintelmann , J. Rehberg , P. Tolksdorf

We survey some $L^{p}$-vanishing results for solutions of Bochner or Simons type equations with refined Kato inequalities, under spectral assumptions on the relevant Schr\"{o}dinger operators. New aspects are included in the picture. In…

Differential Geometry · Mathematics 2011-06-07 Stefano Pigola , Giona Veronelli

In this paper, we introduce the concept of relative convex sequences and establish their fundamental properties, highlighting their similarities to those of convex sequences. Additionally, we prove new inequalities of the Lupas and…

Complex Variables · Mathematics 2023-09-07 Abdallah El Farissi , Zinelaabidine Latreuch , Sabrina Taf , Mohamed Amine Zemirni

We study asymmetric regular types. If $\frak p$ is regular and $A$-asymmetric then there exists a strict order such that Morley sequences in $\frak p$ over $A$ are strictly increasing (we allow Morley sequences to be indexed by elements of…

Logic · Mathematics 2015-03-17 Slavko Moconja , Predrag Tanović

We study $L^p$ inequalities that sharpen the triangle inequality for sums of $N$ functions in $L^p$.

Functional Analysis · Mathematics 2019-02-13 Eric A. Carlen , Rupert L. Frank , Elliott H. Lieb

We prove weak type inequalities for a large class of noncommutative square functions. In conjunction with BMO type estimates, interpolation and duality, we will obtain the corresponding equivalences in the whole Lp scale. The main novelty…

Operator Algebras · Mathematics 2009-01-27 Tao Mei , Javier Parcet

We introduce a natural definition of $L^p$-convergence of maps, $p \ge 1$, in the case where the domain is a convergent sequence of measured metric space with respect to the measured Gromov-Hausdorff topology and the target is a…

Differential Geometry · Mathematics 2007-05-23 Kazuhiro Kuwae , Takashi Shioya

In this paper, we study the ratio of the $L_1 $ and $L_2 $ norms, denoted as $L_1/L_2$, to promote sparsity. Due to the non-convexity and non-linearity, there has been little attention to this scale-invariant model. Compared to popular…

Numerical Analysis · Mathematics 2019-08-19 Yaghoub Rahimi , Chao Wang , Hongbo Dong , Yifei Lou

Representations by linear integral operators on $L_p$ spaces over measure spaces are investigated for the polynomial covariance type commutation relations and more general two-sided generalizations of covariance commutation relations…

Functional Analysis · Mathematics 2023-05-18 Domingos Djinja , Sergei Silvestrov , Alex Behakanira Tumwesigye

Let $\cal M$ be a semi-finite von Neumann algebra equipped with a distinguished faithful, normal, semi-finite trace $\tau$. We introduce the notion of equi-integrability in non-commutative spaces and show that if a rearrangement invariant…

Functional Analysis · Mathematics 2007-05-23 Narcisse Randrianantoanina

We introduce a quantitative version of Property A in order to estimate the L^p-compressions of a metric measure space X. We obtain various estimates for spaces with sub-exponential volume growth. This quantitative property A also appears to…

Metric Geometry · Mathematics 2007-06-28 Romain Tessera

Many trace inequalities can be expressed either as concavity/convexity theorems or as monotonicity theorems. A classic example is the joint convexity of the quantum relative entropy which is equivalent to the Data Processing Inequality. The…

Functional Analysis · Mathematics 2022-10-25 Eric A. Carlen , Haonan Zhang

This paper is devoted to a new family of reverse Hardy-Littlewood-Sobolev inequalities which involve a power law kernel with positive exponent. We investigate the range of the admissible parameters and characterize the optimal functions. A…

Analysis of PDEs · Mathematics 2018-03-20 Jean Dolbeault , Rupert Frank , Franca Hoffmann

In this paper, we obtained the Dunkl analogy of classical Lp Hardy inequality for $p > N + 2\gamma$ with sharp constant $\left(\frac{p-N-2\gamma}{p}\right)^{p}$, where $2\gamma$ is the degree of weight function associated with Dunkl…

Analysis of PDEs · Mathematics 2020-01-16 Li Tang , Haiting Chen , Shoufeng Shen , Yongyang Jin

This article studies the monotonicity, log-convexity of the modified Lommel functions by using its power series and infinite product representation. Same properties for the ratio of the modified Lommel functions with the Lommel function,…

Classical Analysis and ODEs · Mathematics 2017-04-18 Saiful R Mondal

We establish a reversal of Lyapunov's inequality for monotone log-concave sequences, settling a conjecture of Havrilla-Tkocz and Melbourne-Tkocz. A strengthened version of the same conjecture is disproved through counter example. We also…

Information Theory · Computer Science 2021-11-16 James Melbourne , Gerardo Palafox-Castillo

In this paper, we consider sampling and reconstruction of signals in a reproducing kernel subspace of $L^p(\Rd), 1\le p\le \infty$, associated with an idempotent integral operator whose kernel has certain off-diagonal decay and regularity.…

Information Theory · Computer Science 2010-08-26 M. Zuhair Nashed , Qiyu Sun