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Related papers: Hardy inequalities in globally twisted waveguides

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In this paper, we establish some new inequalities of Hadamard's type for L-Lipschitzian mapping in two variables.

Classical Analysis and ODEs · Mathematics 2011-12-30 M. Z. Sarikaya , H. Yaldiz

Based on a new idea of factorization, we prove an improved discrete Rellich inequality and discuss its optimality. We also give a conjecture on improved higher order discrete Hardy-like inequalities and formulate an open problem for the…

Spectral Theory · Mathematics 2022-06-23 Borbala Gerhat , David Krejcirik , Frantisek Stampach

We prove second and fourth order improved Poincar\'e type inequalities on the hyperbolic space involving Hardy-type remainder terms. Since theirs l.h.s. only involve the radial part of the gradient or of the laplacian, they can be seen as…

Functional Analysis · Mathematics 2020-08-31 Elvise Berchio , Debdip Ganguly , Prasun Roychowdhury

We focus on three different convexity principles for local and nonlocal variational integrals. We prove various generalizations of them, as well as their equivalences. Some applications to nonlinear eigenvalue problems and Hardy-type…

Analysis of PDEs · Mathematics 2014-07-01 Lorenzo Brasco , Giovanni Franzina

In this paper we establish improved Hardy and Rellich type inequalities on Riemannian manifold $M$. Furthermore, we also obtain sharp constant for the improved Hardy inequality and explicit constant for the Rellich inequality on hyperbolic…

Analysis of PDEs · Mathematics 2007-05-23 Ismail Kombe , Murad Ozaydin

By using a general version of curvature condition, derivative inequalities are established for a large class of subelliptic diffusion semigroups. As applications, the Harnack/cost-entropy/cost-variance inequalities for the diffusion…

Probability · Mathematics 2012-03-13 Feng-Yu Wang

Boundary value problems for non-linear parabolic equations with singular potentials are considered. Existence and non-existence results as an application of different Hardy inequalities are proved. Blow-up conditions are investigated too.

Analysis of PDEs · Mathematics 2025-10-14 N. Kutev , T. Rangelov

The spectral properties of the restricted fractional Dirichlet Laplacian in ${\sf V}$-shaped waveguides are studied. The continuous spectrum for such domains with cylindrical outlets is known to occupy the ray $[\Lambda_\dagger, +\infty)$…

Spectral Theory · Mathematics 2024-05-28 Fedor Bakharev , Sergey Matveenko

This paper provides the general theory on parabolic Harnack inequalities (PHI, for short) for regular Dirichlet forms without killing part. We prove PHI by pure analytic methods, using both Nash and Moser approaches, and yield some…

Analysis of PDEs · Mathematics 2025-07-30 Guanhua Liu

In this paper, we study the effect of Hardy potential on the existence or non-existence of solutions to a fractional Laplacian problem involving a singular nonlinearity. Also, we mention a stability result.

Analysis of PDEs · Mathematics 2023-05-22 Masoud Bayrami-Aminlouee , Mahmoud Hesaaraki , Mohamed Karim Hamdani , Nguyen Thanh Chung

Some of the most known integral inequalities are the Sobolev, Hardy and Rellich inequalities in Euclidean spaces. In the context of submanifolds, the Sobolev inequality was proved by Michael-Simon and Hoffman-Spruck. Since then, a sort of…

Differential Geometry · Mathematics 2016-11-16 Marcio Batista , Heudson Mirandola , Feliciano Vitorio

We study the Hardy type inequalities in the framework of equalities. We present equalities which immediately imply Hardy type inequalities by dropping the remainder term. Simultaneously we give a characterization of the class of functions…

Analysis of PDEs · Mathematics 2016-11-14 Shuji Machihara , Tohru Ozawa , Hidemitsu Wadade

We obtain a trace Hardy inequality for the Euclidean space with a bounded cut $\Sigma\subset\mathbb R^d$, $d \ge 2$. In this novel geometric setting, the Hardy-type inequality non-typically holds also for $d = 2$. The respective Hardy…

Analysis of PDEs · Mathematics 2022-07-27 Monique Dauge , Michal Jex , Vladimir Lotoreichik

We prove inequalities involving intrinsic and extrinsic radii and diameters of tetrahedra.

Metric Geometry · Mathematics 2019-07-01 Jin-ichi Itoh , Joël Rouyer , Costin Vîlcu

In this short note, we hope to give a rapid induction for non-experts into the world of Differential Harnack inequalities, which have been so influential in geometric analysis and probability theory over the past few decades. At the…

Differential Geometry · Mathematics 2013-01-09 Sebastian Helmensdorfer , Peter Topping

Firstly, this paper establishes useful forms of the remainder term of Hardy-type inequalities on general domains where the weights are functions of the distance to the boundary. For weakly mean convex domains we use the resulting identities…

Analysis of PDEs · Mathematics 2023-10-31 Joshua Flynn , Nguyen Lam , Guozhen Lu

We revisit the geometric theory of defects. In the differential-geometric models of defects that have been adopted since the 1950s, dislocations have been associated with torsion, disclinations with the full curvature, and point defects…

Mathematical Physics · Physics 2026-02-03 Muzaffer Adak , Ertan Kok , Mehmet Orhan

Topology is an important determinant of the behavior of a great number of condensed-matter systems, but until recently has played a minor role in elasticity. We develop a theory for the deformations of a class of twisted non-Euclidean…

Soft Condensed Matter · Physics 2025-08-26 Carlos E. Moguel-Lehmer , Christian D. Santangelo

In distinction to the Neumann case the squeezing limit of a Dirichlet network leads in the threshold region generically to a quantum graph with disconnected edges, exceptions may come from threshold resonances. Our main point in this paper…

Mathematical Physics · Physics 2019-12-10 Claudio Cacciapuoti , Pavel Exner

The motive of this note is twofold. Inspired by the recent development of a new kind of Hardy inequality, here we discuss the corresponding Hardy-Rellich and Rellich inequality versions in the integral form. The obtained sharp Hardy-Rellich…

Functional Analysis · Mathematics 2025-05-14 Tohru Ozawa , Prasun Roychowdhury , Durvudkhan Suragan