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Related papers: A simple proof of Hardy-Lieb-Thirring inequalities

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In this note we investigate three-dimensional Schr\"odinger operators with $\delta$-interactions supported on $C^2$-smooth cones, both finite and infinite. Our main results concern a Faber-Krahn-type inequality for the principal eigenvalue…

Spectral Theory · Mathematics 2016-12-21 Pavel Exner , Vladimir Lotoreichik

We give a short summary of Varopoulos' generalised Hardy-Littlewood-Sobolev inequality for self-adjoint $C_{0}$ semigroups and give a new probabilistic representation of the classical fractional integral operators on $\R^n$ as projections…

Probability · Mathematics 2013-10-02 David Applebaum , Rodrigo Banuelos

This paper mainly discuss the regularity behavior of the hyperbolic magnetic Schroedinger equation with singular coefficients near the origin. We apply the techniques from the microlocal analysis to explore the upper bound of loss of…

Analysis of PDEs · Mathematics 2016-09-13 Xiaojun Lu , Xiaofen Lv

We prove several trace inequalities that extend the Golden-Thompson and the Araki-Lieb-Thirring inequality to arbitrarily many matrices. In particular, we strengthen Lieb's triple matrix inequality. As an example application of our four…

Mathematical Physics · Physics 2017-03-17 David Sutter , Mario Berta , Marco Tomamichel

In this paper we first prove a number of important inequalities with explicit constants in the setting of the Heisenberg group. This includes the fractional and integer Sobolev, Gagliardo-Nirenberg, (weighted) Hardy-Sobolev, Nash…

Analysis of PDEs · Mathematics 2023-10-03 Marianna Chatzakou , Aidyn Kassymov , Michael Ruzhansky

We prove on the sphere $\mathbb{S}^2$ the Lieb--Thirring inequalities for orthonormal families of scalar and vector functions both on the whole sphere and on proper domains on $\mathbb{S}^2$. By way of applications we obtain an explicit…

Analysis of PDEs · Mathematics 2018-04-26 Alexei Ilyin , Ari Laptev

In this paper, we prove the fractional Hardy inequality on polarisable metric measure spaces. The integral Hardy inequality for $1<p\leq q<\infty$ is playing a key role in the proof. Moreover, we also prove the fractional Hardy-Sobolev type…

Analysis of PDEs · Mathematics 2024-07-23 Aidyn Kassymov , Michael Ruzhansky , Gulnur Zaur

In the Euclidean space of any dimension d, we consider the heat semigroup generated by the magnetic Schroedinger operator from which an inverse-square potential is subtracted in order to make the operator critical in the magnetic-free case.…

Spectral Theory · Mathematics 2017-09-07 Cristian Cazacu , David Krejcirik

The Hardy-Rellich inequality in the whole space with the best constant was firstly proved by Tertikas and Zographopoulos in Adv. Math. (2007) in higher dimensions $N\geq 5$. Then it was extended to lower dimensions $N\in \{3, 4\}$ by…

Analysis of PDEs · Mathematics 2020-12-24 Cristian Cazacu

In this paper, we study Hardy-type uncertainty principles and unique continuation properties for linear covariant Schrodinger equations with variable coefficients in the presence of bounded electric and magnetic potentials. Under suitable…

Analysis of PDEs · Mathematics 2026-04-23 Luca Fanelli , Yilin Song , Ying Wang , Jiqiang Zheng , Ruihan Zhou

We establish the Trudinger-Moser inequality on weighted Sobolev spaces in the whole space, and for a class of quasilinear elliptic operators in radial form of the type $\displaystyle Lu:=-r^{-\theta}(r^{\alpha}\vert…

Analysis of PDEs · Mathematics 2018-10-31 Emerson Abreu , Leandro G. Fernandes

In this paper, we first show that there exists a maximizer for the non-endpoint Strichartz inequalities for the Schr\"odinger equation in all dimensions based on the recent linear profile decomposition results. We then present a new proof…

Analysis of PDEs · Mathematics 2008-10-12 Shuanglin Shao

For $n > k \geq 0$, $\lambda >0$, and $p, r>1$, we establish the following optimal Hardy-Littlewood-Sobolev inequality \[ \Big| \iint_{\mathbf R^n \times \mathbf R^{n-k}} \frac{f(x) g(y)}{ |x-y|^\lambda |y"|^\beta} dx dy \Big| \lesssim \| f…

Functional Analysis · Mathematics 2026-03-17 Quôc Anh Ngô , Quoc-Hung Nguyen , Van Hoang Nguyen

We prove semi-classical estimates on moments of eigenvalues of the Aharonov-Bohm operator in bounded two-dimensional domains. Moreover, we present a counterexample to the generalized diamagnetic inequality which was proposed by Erdos, Loss…

Mathematical Physics · Physics 2007-10-08 Rupert L. Frank , Anders Hansson

In this paper we present a proof of sharp boundedness of the discrete 1-dimensional Hardy-Littlewood nontangential maximal operator, when the parameter is in the range $[\frac{1}{3},+\infty)$. This generalizes a theorem by Bober, Carneiro,…

Classical Analysis and ODEs · Mathematics 2025-03-26 Frederico Toulson

An inequality refining the lower bound for a periodic (Breitenberger) uncertainty constant is proved for a wide class of functions. A connection of uncertainty constants for periodic and non-periodic functions is extended to this class. A…

Classical Analysis and ODEs · Mathematics 2015-03-31 Elena A. Lebedeva

Inequalities are derived for sums and quotients of eigenvalues of magnetic Schroedinger operators with non-negative electric potentials in domains. The bounds reflect the correct order of growth in the semi-classical limit.

Spectral Theory · Mathematics 2007-05-29 Rupert L. Frank , Ari Laptev , Stanislav Molchanov

We consider a multidimensional version of an inequality due to Leray as a substitute for Hardy's inequality in the case $p=n\geq2.$ In this paper we provide an optimal Sobolev-type improvement of this substitute, analogous to the…

Functional Analysis · Mathematics 2014-08-01 Georgios Psaradakis , Daniel Spector

We consider Hardy operators on the half-space, that is, ordinary and fractional Schr\"odinger operators with potentials given by the appropriate power of the distance to the boundary. We show that the scales of homogeneous Sobolev spaces…

Analysis of PDEs · Mathematics 2023-10-03 Rupert L. Frank , Konstantin Merz

We study the fractional Hardy inequality on the integer lattice. We prove null-criticality of the Hardy weight and hence optimality of the constant. More specifically, we present a family of Hardy weights with respect to a parameter and…

Classical Analysis and ODEs · Mathematics 2026-01-06 Philipp Hake , Matthias Keller , Felix Pogorzelski
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