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We consider the possible concentration in phase space of a sequence of eigenfunctions (or, more generally, a quasimode) of an operator whose principal symbol has completely integrable Hamilton flow. The semiclassical wavefront set $WF_h$ of…

偏微分方程分析 · 数学 2011-09-27 Jared Wunsch

The Nernst-Planck-Navier-Stokes system models electrodiffusion of ions in a fluid. We prove global existence of solutions in bounded domains in three dimensions with either blocking (no-flux) or uniform selective (special Dirichlet)…

偏微分方程分析 · 数学 2020-08-25 Peter Constantin , Mihaela Ignatova , Fizay-Noah Lee

The soliton dynamics in the semiclassical limit for a weakly coupled nonlinear focusing Schr\"odinger systems in presence of a nonconstant potential is studied by taking as initial data some rescaled ground state solutions of an associate…

偏微分方程分析 · 数学 2009-08-20 Eugenio Montefusco , Benedetta Pellacci , Marco Squassina

The paper is concerned with a system of linear hyperbolic differential equations on a network coupled through general transmission conditions of Kirchhoff's type at the nodes. We discuss the reduction of such a problem to a system of…

偏微分方程分析 · 数学 2021-02-16 Jacek Banasiak , Adam Błoch

We use the method of layer potentials to study the $R_2$ Regularity problem and the $D_2$ Dirichlet problem for second order elliptic equations of the form $\mathcal{L}u=0$, with lower order coefficients, in bounded Lipschitz domains. For…

偏微分方程分析 · 数学 2018-09-14 Georgios Sakellaris

We study the stability of symmetric trajectories of a particle on the Lie group $SO(3)$ whose motion is governed by an $SO(3)\times SO(2)$ invariant metric and an $SO(2)\times SO(2)$ invariant potential. Our method is to reduce the number…

dg-ga · 数学 2008-02-03 Eugene Lerman

We investigate off-diagonal decay properties of the generalized Stokes semigroup with bounded measurable coefficients on $\mathrm{L}^2_{\sigma} (\mathbb{R}^d)$. Such estimates are well-known for elliptic equations in the form of pointwise…

偏微分方程分析 · 数学 2021-03-05 Patrick Tolksdorf

This paper is devoted to the well-posedness analysis of a nonstationary Stokes hemivariational inequality for an incompressible fluid flow described by the Stokes equations subject to a nonsmooth boundary condition of friction type…

数值分析 · 数学 2026-03-31 Weimin Han , Shengda Zeng

Maximal $L^p$-$L^q$ regularity is proved for the strong, weak and very weak solutions of the inhomogeneous Stokes problem with Navier-type boundary conditions in a bounded domain $\Omega$, not necessarily simply connected. This extends…

偏微分方程分析 · 数学 2017-03-21 Hind Al Baba , Chérif Amrouche , Miguel Escobedo

We consider a second-order nonlocal parabolic MEMS equation with Dirichlet boundary conditions: \[ u_t-\Delta u=\frac{\lambda}{(1-u)^2\bigl(1+\int_\Omega\frac{1}{1-u}\,dx\bigr)^2},\quad x\in\Omega,\ t>0, \] where…

偏微分方程分析 · 数学 2026-03-10 Yufei Wei , Yanyan Zhang

We study the incompressible stationary Navier-Stokes equations in the upper-half plane with homogeneous Dirichlet boundary condition and non-zero external forcing terms. Existence of weak solutions is proved under a suitable condition on…

偏微分方程分析 · 数学 2023-06-02 Adrian D. Calderon , Van Le , Tuoc Phan

We identify a norm on the pressure variable in the Stokes equation that allows us to prove a continuous inf-sup condition with a constant independent of the domain's aspect ratio. This is in contrast to the standard inf-sup constant, which…

数值分析 · 数学 2025-10-29 Espen Sande , Timo Koch , Miroslav Kuchta , Kent-Andre Mardal

This paper revisits a homogenization problem studied by L. Tartar related to a tridimensional Stokes equation perturbed by a drift (connected to the Coriolis force). Here, a scalar equation and a two-dimensional Stokes equation with a…

偏微分方程分析 · 数学 2010-06-17 Marc Briane , Patrick Gérard

The Immersed Boundary method has evolved into one of the most useful computational methods in studying fluid structure interaction. On the other hand, the Immersed Boundary method is also known to suffer from a severe timestep stability…

计算工程、金融与科学 · 计算机科学 2009-11-13 Thomas Y. Hou , Zuoqiang Shi

The paper is concerned with a nonlinear system of partial differential equations with parameters and the random external force. This system describes the two-layer quasi-solenoidal Lorenz model for a baroclinic atmosphere on a rotating…

偏微分方程分析 · 数学 2022-05-12 Yulia Klevtsova

We study the stability of the two-dimensional Lax-Wendroff scheme with a stabilizer that approximates solutions to the transport equation. The problem is first analyzed in the whole space in order to show that the so-called energy method…

数值分析 · 数学 2022-10-12 Jean-François Coulombel , Antoine Benoit

We study exact solutions for the slow viscous flow of an infinite liquid caused by two rigid spheres approaching each either along or parallel to their line of centres, valid at all separations. This goes beyond the applicable range of…

流体动力学 · 物理学 2020-03-30 B. D. Goddard , R. D. Mills-Williams , J. Sun

In this article we study the propagation of Wigner measures linked to solutions of the Schr{\"o}dinger equation with potentials presenting conical singularities and show that they are transported by two different Hamiltonian flows, one over…

偏微分方程分析 · 数学 2017-03-29 Victor Chabu

We consider the Dirichlet-Neumann operator for a nearly spherical domain in R^n, and prove sharp analytic and tame estimates in Sobolev class. The novelty of this paper concerns technical improvements, the most important of which are the…

偏微分方程分析 · 数学 2026-03-31 Pietro Baldi , Vesa Julin , Domenico Angelo La Manna

In this paper, we deal with the existence of insensitizing controls for the Navier-Stokes equations in a bounded domain with Dirichlet boundary conditions. We prove that there exist controls insensitizing the $L^2$ -norm of the observation…

偏微分方程分析 · 数学 2015-06-05 Mamadou Gueye
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