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Motivated by an equation arising in magnetohydrodynamics, we address the well-posedness theroy for the non-diffusive magneto-geostrophic equation. Namely, an active scalar equation in which the divergence-free drift velocity is one…

偏微分方程分析 · 数学 2019-03-07 Daniel Lear

We prove the existence of strong time-periodic solutions and their asymptotic stability with the total energy of the perturbations decaying to zero at an exponential decay rate as $t \rightarrow \infty$ for a semilinear (nonlinearly…

偏微分方程分析 · 数学 2014-01-08 Jáuber C. Oliveira

This paper investigates an initial-boundary value problem for three-dimensional (3D) micropolar fluids in a strip domain, including both the compressible and the (homogeneous and inhomogeneous) incompressible cases in the absence of angular…

偏微分方程分析 · 数学 2026-05-21 Youyi Zhao

We consider the free boundary problem for a layer of compressible viscous barotropic fluid lying above a fixed rigid bottom and below the atmosphere of positive constant pressure. The fluid dynamics is governed by the compressible…

偏微分方程分析 · 数学 2024-11-01 Ting Sun , Yanjin Wang

We study the $2\frac12$-dimensional electron magnetohydrodynamics (EMHD) system on $\mathbb T^2$ with componentwise fractional dissipation: $\partial_t a+a_yb_x-a_xb_y=-\Lambda^\alpha a$ and $\partial_t b-a_y\Delta a_x+a_x\Delta…

偏微分方程分析 · 数学 2026-05-21 Qirui Peng

We revisit the global existence of solutions with some large perturbations to the incompressible, viscous, and non-resistive MHD system in a three-dimensional periodic domain, where the impressed magnetic field satisfies the Diophantine…

偏微分方程分析 · 数学 2024-03-11 Youyi Zhao

Vanishing of the Fefferman-Graham obstruction tensor was used by Andersson and Chru{\'s}ciel to show stability of the asymptotically de Sitter spaces in even dimensions. However, existing proofs of hyperbolicity of this equation contain…

广义相对论与量子宇宙学 · 物理学 2022-03-02 Wojciech Kamiński

In this three-part monograph, we prove that steady, incompressible Navier-Stokes flows posed over the moving boundary, $y = 0$, can be decomposed into Euler and Prandtl flows in the inviscid limit globally in $[1,\infty) \times [0,\infty)$,…

偏微分方程分析 · 数学 2016-09-20 Sameer Iyer

In this paper we are concerned with the global well-posedness for the compressible MHD equations with large data. We show that if the shear viscosity $\mu$ is a positive constant and the bulk viscosity $\lambda$ is the power function of the…

偏微分方程分析 · 数学 2012-04-26 Dongfen Bian , Boling Guo

We study the well-posedness and stability of an impedance passive infinite-dimensional linear system under nonlinear feedback of the form $u(t)=\phi(v(t)-y(t))$, where $\phi$ is a monotone function. Our first main result introduces…

最优化与控制 · 数学 2025-06-19 Anthony Hastir , Lassi Paunonen

This note concerns a nonlinear ill-posedness of the Prandtl equation and an invalidity of asymptotic boundary-layer expansions of incompressible fluid flows near a solid boundary. Our analysis is built upon recent remarkable linear…

偏微分方程分析 · 数学 2011-03-15 Yan Guo , Toan Nguyen

In this paper, we study the global well-posedness and decay rates of strong solutions to an incompressible Vlasov-MHD model arising in magnetized plasmas. This model is consist of the Vlasov equation and the incompressible…

偏微分方程分析 · 数学 2024-08-27 Fucai Li , Jinkai Ni , Man Wu

In this paper we show the global well-posedness of solutions to a three-dimensional magnetohydrodynamical (MHD) model in porous media. Compared to the classical MHD equations, our system involves a nonlinear damping term in the momentum…

偏微分方程分析 · 数学 2018-06-07 Edriss S. Titi , Saber Trabelsi

We show that the system is locally wellposed in by establishing a new commutator estimate

偏微分方程分析 · 数学 2018-07-04 Yatao Li

This paper resolves the global regularity problem for the three-dimensional incompressible magnetohydrodynamics (MHD) equations in the upper half-space with slip boundary conditions, in the presence of a background magnetic field. Motivated…

偏微分方程分析 · 数学 2025-08-14 Jincheng Gao , Lianyun Peng , Jiahong Wu , Zheng-an Yao

We establish the local existence and uniqueness of multi-dimensional contact discontinuities for the ideal compressible magnetohydrodynamics (MHD) in Sobolev spaces, which are most typical interfacial waves for astrophysical plasmas and…

偏微分方程分析 · 数学 2024-05-21 Yanjin Wang , Zhouping Xin

Building on results developed in https://doi.org/10.48550/arXiv.2404.14902, where It\^{o}-SDEs with possibly degenerate and discontinuous dispersion coefficient and measurable drift were analyzed with respect to a given (sub-)invariant…

概率论 · 数学 2024-05-21 Haesung Lee , Gerald Trutnau

In this paper, firstly, we prove the global well-posedness of three dimensional compressible magnetohydrodynamics equations for some classes of large initial data, which may have large oscillation for the density and large energy for the…

偏微分方程分析 · 数学 2015-05-08 Junxiong Jia , Jigen Peng , Kexue Li

This work is devoted to establishing the local-in-time well-posedness of strong solutions to the three-dimensional compressible primitive equations of atmospheric dynamics. It is shown that strong solutions exist, unique, and depend…

偏微分方程分析 · 数学 2018-06-27 Xin Liu , Edriss S. Titi

In general, the resistivity is inversely proportional to the electrical conductivity, and is usually taken to be zero when the conducting fluid is of extremely high conductivity (e.g., ideal conductors). In this paper, we first establish…

偏微分方程分析 · 数学 2015-11-24 Jianwen Zhang , Xiaokui Zhao