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In this article, we investigate the global existence of martingale suitable weak solutions to stochastic Ericksen-Leslie equations with additive noise in a 3D torus. The notion of suitable weak solutions has been introduced to address…

偏微分方程分析 · 数学 2025-10-16 Hengrong Du , Chuntian Wang

In this paper, we give a rigorous justification of the deviation of the primitive equations with only horizontal viscosity and magnetic diffusivity (PEHM) as the small aspect ratio limit of the incompressible three-dimensional scaled…

偏微分方程分析 · 数学 2023-08-08 Jie Zhang , Wenjun Liu

We prove a sharp nonuniqueness result for the forced generalized SQG equation. First, this yields nonunique $\dot{H}^s$- energy solutions below the Miura-Ju class. In particular, this shows that the solutions constructed by Resnick and…

偏微分方程分析 · 数学 2026-01-05 Francisco Mengual , Marcos Solera

We prove the local wellposedness of the Cauchy problems for the electron magnetohydrodynamics equations (E-MHD) without resistivity for possibly large perturbations of nonzero uniform magnetic fields. While the local wellposedness problem…

偏微分方程分析 · 数学 2024-02-12 In-Jee Jeong , Sung-Jin Oh

We are concerned with the question of well-posedness of stochastic three dimensional incompressible Euler equations. In particular, we introduce a novel class of dissipative solutions and show that (i) existence; (ii) weak--strong…

概率论 · 数学 2020-09-23 Martina Hofmanová , Rongchan Zhu , Xiangchan Zhu

In this paper, we investigate the global existence of weak solutions to 3-D inhomogeneous incompressible MHD equations with variable viscosity and resistivity, which is sufficiently close to $1$ in $L^\infty(\mathbb{R}^3),$ provided that…

偏微分方程分析 · 数学 2025-03-04 Hammadi Abidi , Guilong Gui , Ping Zhang

We study partial regularity of weak solutions of the 3D valued non-stationary Hall magnetohydrodynamics equations on $ \Bbb R^2$. In particular we prove the existence of a weak solution whose set of possible singularities has the space-time…

偏微分方程分析 · 数学 2015-02-13 Dongho Chae , Joerg Wolf

The three-dimensional compressible magnetohydrodynamic (MHD) isentropic flow with zero magnetic diffusivity is studied. The vanishing magnetic diffusivity causes significant difficulties due to the loss of dissipation of the magnetic field.…

偏微分方程分析 · 数学 2011-08-30 Xiaoli Li , Ning Su , Dehua Wang

In this article, we prove the existence of global weak solutions to the three-dimensional focusing energy-critical nonlinear Schr\"odinger (NLS) equation in the non-radial case. Furthermore, we prove the weak-strong uniqueness for some…

偏微分方程分析 · 数学 2026-01-30 Xing Cheng , Chang-Yu Guo , Yunrui Zheng

This paper characterizes the possible blow-up of solutions for the 3D magneto-hydrodynamics (MHD for short) equations. We first establish some $\epsilon$-regularity criteria in $L^{q,\infty}$ spaces for suitable weak solutions, and then…

偏微分方程分析 · 数学 2021-08-25 Wenke Tan , Fan Wu

In this paper we analyze the three-dimensional Peterlin viscoelastic model. By means of a mixed Galerkin and semigroup approach we prove the existence of a weak solutions. Further combining parabolic regularity with the relative energy…

偏微分方程分析 · 数学 2022-03-24 Aaron Brunk , Yong Lu , Maria Lukacova-Medvidova

We consider the interaction of a viscous incompressible fluid with a flexible shell in three space dimensions. The fluid is described by the three-dimensional incompressible Navier--Stokes equations in a domain that is changing in…

偏微分方程分析 · 数学 2023-07-25 Dominic Breit , Prince Romeo Mensah , Sebastian Schwarzacher , Pei Su

Using a weak convergence approach, we prove a LPD for the solution of 2D stochastic Navier Stokes equations when the viscosity converges to 0 and the noise intensity is multiplied by the square root of the viscosity. Unlike previous results…

概率论 · 数学 2012-08-09 Hakima Bessaih , Annie Millet

We establish a weak-strong uniqueness principle for the two-phase Mullins-Sekerka equation in the plane: As long as a classical solution to the evolution problem exists, any weak De Giorgi type varifold solution (see for this notion the…

偏微分方程分析 · 数学 2024-04-04 Julian Fischer , Sebastian Hensel , Tim Laux , Theresa M. Simon

The goal of this paper is to construct non-trivial steady-state weak solutions of the three dimensional Electron Magnetohydrodynamics equations in the class of $H^s(\mathbb T^3)$ for some small $s > 0$. By exploiting the formulation of the…

偏微分方程分析 · 数学 2025-07-08 Qirui Peng

We prove the global well-posedness of weak solutions for nonlinear wave equations with supercritical source and damping terms on a three-dimensional torus $\mathbb T^3$ of the prototype \begin{align*} &u_{tt}-\Delta…

偏微分方程分析 · 数学 2018-10-31 Yanqiu Guo

We present a Lyapunov type approach to the problem of existence and uniqueness of general law-dependent stochastic differential equations. In the existing literature most results concerning existence and uniqueness are obtained under…

概率论 · 数学 2019-11-19 Sima Mehri , Wilhelm Stannat

We prove a Prodi-Serrin-type global regularity condition for the three-dimensional Magnetohydrodynamic-Boussinesq system (3D MHD-Boussinesq) without thermal diffusion, in terms of only two velocity and two magnetic components. This is the…

偏微分方程分析 · 数学 2016-09-21 Adam Larios , Yuan Pei

We consider the focusing power nonlinearity heat equation \begin{equation}\label{Eq:Heat_abstract}\tag{NLH} \partial_t u -\Delta u = |u|^{p-1}u, \quad p>1, \end{equation} in dimensions $d \geq 3$. It is well-known that if $p$ is large…

偏微分方程分析 · 数学 2025-01-29 Irfan Glogić , Martina Hofmanová , Theresa Lange , Eliseo Luongo

We consider the three-dimensional magnetohydrodynamics (MHD) equations in the presence of a spatially degenerate stochastic forcing as a model for magnetostrophic turbulence in the Earth's fluid core. We examine the multi-parameter singular…

偏微分方程分析 · 数学 2016-04-22 Juraj Földes , Susan Friedlander , Nathan Glatt-Holtz , Geordie Richards