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We prove uniqueness and stability for the inverse boundary value problem of the two dimensional Schr\"odinger equation. We do not assume the potentials to be continuous or even bounded. Instead, we assume that some of their positive…

偏微分方程分析 · 数学 2017-10-04 Eemeli Blåsten

Whether or not the solution to the $2\frac{1}{2}$-dimensional Hall-magnetohydrodynamics system starting from smooth initial data preserves its regularity for all time remains a challenging open problem. Although the research direction on…

偏微分方程分析 · 数学 2022-06-27 Mohammad Mahabubur Rahman , Kazuo Yamazaki

A model is proposed, according to which the metric tensor field in the standard gravitational Lagrangian is decomposed into a projection (generally - with a non-zero covariant derivative) tensor field, orthogonal to an arbitrary 4-vector…

广义相对论与量子宇宙学 · 物理学 2007-05-23 B. G. Dimitrov

This paper is concerned with the validity of the Prandtl boundary layer theory in the inviscid limit of the steady incompressible Navier-Stokes equations, which is an extension of the pioneer paper (Y. Guo et al., 2017, Ann. PDE) from a…

偏微分方程分析 · 数学 2018-11-29 Shijin Ding , Quanrong Li

A theory of a new magnetodynamic effect describing the energy exchange between the degrees of freedom of a conducting cylinder moving in a helical magnetic field has been developed. The possibility of effectively converting the…

等离子体物理 · 物理学 2025-09-15 M. D. Tokman , V. L. Bratman , E. Magori , N. Balal

Most large-scale planetary magnetic fields are thought to be driven by low Rossby number convection of a low magnetic Prandtl number fluid. Here kinematic dynamo action is investigated with an asymptotic, rapidly rotating dynamo model for…

地球物理 · 物理学 2016-12-14 Michael A. Calkins , Louie Long , David Nieves , Keith Julien , Steven M. Tobias

We study first order equations of continuity and transport type on metric spaces of martingale dimension one, including finite metric graphs, p.c.f. self-similar sets and classical Sierpi\'nski carpets. On such spaces solutions of the…

偏微分方程分析 · 数学 2024-12-12 Michael Hinz , Waldemar Schefer

Helmholtz decomposition theorem for vector fields is usually presented with too strong restrictions on the fields and only for time independent fields. Blumenthal showed in 1905 that decomposition is possible for any asymptotically weakly…

经典物理 · 物理学 2017-04-10 D. Petrascheck , R. Folk

The aim of this paper is to investigate the stability of Prandtl boundary layers in the vanishing viscosity limit: $\nu \to 0$. In \cite{Grenier}, one of the authors proved that there exists no asymptotic expansion involving one Prandtl's…

偏微分方程分析 · 数学 2018-04-04 Emmanuel Grenier , Toan T. Nguyen

A classical first-order Hardy-Sobolev inequality in Euclidean domains, involving weighted norms depending on powers of the distance function from their boundary, is known to hold for every, but one, value of the power. We show that, by…

泛函分析 · 数学 2016-08-05 Andrea Cianchi , Norisuke Ioku

We propose a novel discretization of tangent vector fields for triangle meshes. Starting with a Phong map continuously assigning normals to all points on the mesh, we define an extrinsic bases for continuous tangent vector fields by using…

图形学 · 计算机科学 2026-01-16 Hongyi Liu , Oded Stein , Amir Vaxman , Mirela Ben-Chen , Misha Kazhdan

This monograph is centred at the intersection of three mathematical topics, that are theoretical in nature, yet with motivations and relevance deep rooted in applications: the linear inverse problems on abstract, in general…

泛函分析 · 数学 2022-02-25 Noe Angelo Caruso , Alessandro Michelangeli

The concept of local fractional derivative was introduced in order to be able to study the local scaling behavior of functions. However it has turned out to be much more useful. It was found that simple equations involving these operators…

数学物理 · 物理学 2017-08-04 Kiran M. Kolwankar

The original perturbative Kramers' method (starting from the phase space coordinates) (Kramers, 1940) of determining the energy-controlled-diffusion equation for Newtonian particles with separable and additive Hamiltonians is generalized to…

统计力学 · 物理学 2019-08-20 Declan J. Byrne , William T. Coffey , Yuri P. Kalmykov , Serguey V. Titov

The discrete Schr\"odinger equation with the Dirichlet boundary condition is considered on a half-line lattice when the potential is real valued and compactly supported. The inverse problem of recovery of the potential from the so-called…

谱理论 · 数学 2018-05-22 Tuncay Aktosun , Vassilis G. Papanicolaou

The estimate [\lVert D^{k-1}u\rVert_{L^{n/(n-1)}} \le \lVert A(D)u \rVert_{L^1} ] is shown to hold if and only if (A(D)) is elliptic and canceling. Here (A(D)) is a homogeneous linear differential operator (A(D)) of order (k) on…

偏微分方程分析 · 数学 2013-07-10 Jean Van Schaftingen

In this paper, we prove that separation occurs for the stationary Prandtl equation, in the case of adverse pressure gradient, for a large class of boundary data at $x=0$.We justify the Goldstein singularity: more precisely, we prove that…

偏微分方程分析 · 数学 2018-02-13 Anne-Laure Dalibard , Nader Masmoudi

In this work, the poles and the resulting dispersion spectra from the relativistic kinetic equation have been analyzed with the help of a proposed collision kernel that conserves both the energy-momentum tensor and particle current by…

核理论 · 物理学 2025-12-31 Sukanya Mitra

Using a conjecture that allows to approach separable-variables conductivity functions, the elements of the Modern Pseudoanalytic Function Theory are used, for the first time, to numerically solve the Dirichlet boundary value problem of the…

数学物理 · 物理学 2012-02-23 M. P. Ramirez T

In a thermal field theory, the cumulants of the momentum distribution can be extracted from the dependence of the Euclidean path integral on a shift in the fields built into the temporal boundary condition. When combined with the Ward…

高能物理 - 格点 · 物理学 2015-05-30 Leonardo Giusti , Harvey B. Meyer