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In this article we compute the best Sobolev constants for various Hardy-Sobolev inequalities with sharp Hardy term. This is carried out in three different environments: interior point singularity in Euclidean space, interior point…

Analysis of PDEs · Mathematics 2019-09-24 Gerassimos Barbatis , Achilles Tertikas

We revisit the local well-posedness theory of nonlinear Schr\"odinger and wave equations in Sobolev spaces $H^s$ and $\dot{H}^s$, $0< s\leq 1$. The theory has been well established over the past few decades under Sobolev initial data…

Analysis of PDEs · Mathematics 2023-04-04 Youngwoo Koh , Yoonjung Lee , Ihyeok Seo

We study in this paper the well-posedness and stability for two linear Schr\"odinger equations in $d$-dimensional open bounded domain under Dirichlet boundary conditions with an infinite memory. First, we establish the well-posedness in the…

Analysis of PDEs · Mathematics 2023-01-20 Marcelo Cavalcanti , Valeria Domingos Cavalcanti , Aissa Guesmia , Mauricio Sepúlveda

We prove the local well-posedness in Sobolev spaces of the free-boundary problem for compressible inviscid resistive isentropic MHD system under the Rayleigh-Taylor physical sign condition, which describes the motion of a free-boundary…

Analysis of PDEs · Mathematics 2023-03-24 Junyan Zhang

The approximation of integral type functionals is studied for discrete observations of a continuous It\^o semimartingale. Based on novel approximations in the Fourier domain, central limit theorems are proved for $L^2$-Sobolev functions…

Probability · Mathematics 2022-11-08 Randolf Altmeyer

This article deals with the spectral analysis of the semiclassical Neumann magnetic Laplacian on a smooth bounded domain in dimension three. When the magnetic field is constant and in the semiclassical limit, we establish a four-term…

Spectral Theory · Mathematics 2022-03-14 Frédéric Hérau , Nicolas Raymond

For a non-local semilinear eigenvalue problem, we prove simplicity and isolation of the first eigenvalue with homogeneous Dirichlet boundary conditions on open sets supporting a suitable compact Sobolev embedding.

Analysis of PDEs · Mathematics 2022-07-14 Giovanni Franzina , Danilo Licheri

This paper establishes a general topological condition under which the semilocal stability of a set-valued mapping can be exactly determined by its local stability properties. Specifically, we investigate the relationship between the…

Optimization and Control · Mathematics 2026-03-12 J. Camacho

This paper deals with the spatial and temporal regularity of the unique Hilbert space valued mild solution to a semilinear stochastic partial differential equation with nonlinear terms that satisfy global Lipschitz conditions. It is shown…

Analysis of PDEs · Mathematics 2012-08-21 Raphael Kruse , Stig Larsson

We determine the sharp constant in the Hardy inequality for fractional Sobolev spaces. To do so, we develop a non-linear and non-local version of the ground state representation, which even yields a remainder term. From the sharp Hardy…

Analysis of PDEs · Mathematics 2008-11-15 Rupert L. Frank , Robert Seiringer

We present a study of systems of single-molecule magnets using a semiclassical analysis and catastrophe theory. Separatrices in parameter space are constructed which are useful to determine the structure of the Hamiltonians energy levels.…

Quantum Physics · Physics 2023-06-21 David Stefan , Lohr-Robles , Enrique , Lopez-Moreno , Peter Otto Hess

In the present paper, we study the semi-classical approximation of a Yukawa-coupled massive Dirac-Klein-Gordon system with some general nonlinear self-coupling. We prove that for a constrained coupling constant there exists a family of…

Analysis of PDEs · Mathematics 2015-01-19 Yanheng Ding , Tian Xu

We investigate the persistence of embedded eigenvalues for a class of magnetic Laplacians on an infinite cylindrical domain. The magnetic potential is assumed to be $C^2$ and asymptotically periodic along the unbounded direction, with an…

Functional Analysis · Mathematics 2025-08-22 Jonas Jansen , Sara Maad Sasane , Wilhelm Treschow

We construct and investigate the properties of tempered ultradistribution spaces in Sobolev spaces. A new Sobolev space preserving the original properties and condition whose derivatives are linear continuous operators embedding in $L^p$…

Functional Analysis · Mathematics 2025-03-31 A. U. Amaonyeiro , M. E. Egwe

The continouity and compactness of embedding operators in in Sobolev-Lions type spaces are derived. By applying this result separability properties of degenerate anisotropic differential operator equations, well-posedeness and Strichartz…

Functional Analysis · Mathematics 2017-05-26 Veli Shakhmurov

We study the convergence of states under continuous-time depolarizing channels with full rank fixed points in terms of the relative entropy. The optimal exponent of an upper bound on the relative entropy in this case is given by the…

Quantum Physics · Physics 2017-12-06 Alexander Müller-Hermes , Daniel Stilck Franca , Michael M. Wolf

We continue our previous work studying critical exponent semilinear elliptic (and subelliptic) problems which generalize the classical Yamabe problem. In [3] the focus was on metric-measure spaces with an `almost smooth' structure, with…

Differential Geometry · Mathematics 2013-06-20 Kazuo Akutagawa , Gilles Carron , Rafe Mazzeo

We consider a magnetic Schr\"odinger operator $H^h$, depending on a semiclassical parameter $h>0$, on a compact Riemannian manifold. We assume that there is no electric field. We suppose that the minimal value $b_0$ of the intensity of the…

Spectral Theory · Mathematics 2013-11-26 Bernard Helffer , Yuri A. Kordyukov

We consider the magnetohydrodynamics system with Hall effect accompanied with initial data in supercritical Sobolev space. Via an appropriate randomization of the supercritical initial data, both local and small data global well-posedness…

Analysis of PDEs · Mathematics 2022-02-10 Mimi Dai

We describe a procedure to introduce Sobolev spaces and the semigroup generated by the fractional Dirichlet Laplacian on an arbitrary domain of $\R^d$. In particular, the well-definedness of the spaces of both non-homogeneous and…

Functional Analysis · Mathematics 2022-03-30 Reinhard Farwig , Tsukasa Iwabuchi