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Regularity and uniqueness of weak solutions of the compressible barotropic Navier-Stokes equations with constant viscosity coefficients is proven for small time in dimension $N=2,3$ under periodic boundary conditions. In this paper, the…

偏微分方程分析 · 数学 2011-11-11 Boris Haspot

Using the convex integration technique for the three-dimensional Navier-Stokes equations introduced by T. Buckmaster and V. Vicol, it is shown the existence of non-unique weak solutions for the 3D Navier-Stokes equations with fractional…

偏微分方程分析 · 数学 2020-04-17 Tianwen Luo , Edriss S. Titi

We prove the existence of weak solutions to the 3D ideal MHD equations, of class $C^\alpha$ with $\alpha=1/200$, for which the total energy and the cross helicity (i.e., the so-called Els\"asser energies) are not conserved. The solutions do…

偏微分方程分析 · 数学 2026-02-19 Alberto Enciso , Javier Peñafiel-Tomás , Daniel Peralta-Salas

This paper concerns the forced stochastic Navier-Stokes equation driven by additive noise in the three dimensional Euclidean space. By constructing an appropriate forcing term, we prove that there exist distinct Leray solutions in the…

概率论 · 数学 2024-04-09 Elia Brué , Rui Jin , Yachun Li , Deng Zhang

In this paper we establish a sharp non-uniqueness result for stochastic $d$-dimensional ($d\geq2$) incompressible Navier-Stokes equations. First, for every divergence free initial condition in $L^2$ we show existence of infinite many global…

概率论 · 数学 2022-08-18 Weiquan Chen , Zhao Dong , Xiangchan Zhu

In this paper we establish a complete local theory for the energy-critical nonlinear wave equation (NLW) in high dimensions ${\mathbb R} \times {\mathbb R}^d$ with $d \geq 6$. We prove the stability of solutions under the weak condition…

偏微分方程分析 · 数学 2015-08-12 Aynur Bulut , Magdalena Czubak , Dong Li , Nataša Pavlović , Xiaoyi Zhang

In this paper, we exhibit non-uniqueness of Leray weak solutions of the forced magnetohydrodynamic (MHD for short) equations. Similar to the solutions constructed in \cite{ABC2}, we first find a special steady solution of ideal MHD…

偏微分方程分析 · 数学 2024-07-10 Jun Wang , Fei Xu , Yong Zhang

This work focuses on the 3D incompressible magnetohydrodynamic (MHD) equations with mixed pressure-velocity-magnetic field in view of Lorentz spaces. Our main result shows the weak solution is regular, provided that $${\frac{\pi }{\left(…

偏微分方程分析 · 数学 2022-03-03 Ahmad M. Alghamdi , Sadek Gala , Maria Alessandra Ragusa

In this paper we deal with weak solutions to the Maxwell-Landau-Lifshitz equations and to the Hall-Magneto-Hydrodynamic equations. First we prove that these solutions satisfy some weak-strong uniqueness property. Then we investigate the…

偏微分方程分析 · 数学 2015-06-15 Eric Dumas , Franck Sueur

First, a new sufficient condition for uniqueness of weak solutions is proved for the system of 2D viscous Primitive Equations. Second, global existence and uniqueness are established for several classes of weak solutions with partial…

偏微分方程分析 · 数学 2018-08-10 Ning Ju

This paper is concerned with existence of solutions to the incompressible non-resistive viscous magnetohydrodynamic (MHD) equations with large initial perturbations in there-dimensional (3D) periodic domains (in Lagrangian coordinates).…

偏微分方程分析 · 数学 2021-11-19 Fei Jiang , Song Jiang

We prove conditional weak-strong uniqueness of the potential Euler solution for external flow around a smooth body in three space dimensions, within the class of viscosity weak solutions with the same initial data. Our sufficient condition…

偏微分方程分析 · 数学 2025-03-11 Hao Quan , Gregory L. Eyink

We prove the non-uniqueness of weak solutions with non-trivial magnetic fields to the 3D Hall-MHD equations on the plane in the space $C^0_t L_x^2$ through the convex integration scheme and by constructing new errors and new intermittent…

偏微分方程分析 · 数学 2025-08-18 Yi Peng , Huaqiao Wang , Chenlu Zhang

In the class of admissible weak solutions, we prove a weak-strong uniqueness result for the incompressible Euler equations assuming that the symmetric part of the gradient belongs to $L^1_{\rm loc}([0,+\infty);L^{\rm…

偏微分方程分析 · 数学 2023-09-07 Luigi De Rosa , Marco Inversi , Giorgio Stefani

This paper establishes the local-in-time existence and uniqueness of solutions to the viscous, non-resistive magnetohydrodynamics (MHD) equations in $\mathbb{R}^d$, $d=2,3$, with initial data $B_0\in H^s(\mathbb{R}^d)$ and $u_0\in…

偏微分方程分析 · 数学 2016-09-21 Charles L. Fefferman , David S. McCormick , James C. Robinson , Jose L. Rodrigo

This paper investigates the existence and uniqueness of solutions, as well as the ergodicity and exponential mixing to invariant measures, and limit theorems for a class of McKean-Vlasov SPDEs with locally weak monotonicity. In particular,…

概率论 · 数学 2025-03-11 Shuaishuai Lu , Xue Yang , Yong Li

We show that if a Hamilton-Jacobi equation admits a differentiable solution whose gradient is Lipschitz, then this solution is the unique semi-concave weak solution. Our result does not rely on any convexity (nor concavity) assumptions on…

偏微分方程分析 · 数学 2024-10-02 Victor Issa

We prove the existence of weak solutions to steady, compressible non-Newtonian Navier-Stokes system on a bounded, two- or three-dimensional domain. Assuming the viscous stress tensor is monotone satisfying a power-law growth with power $r$…

偏微分方程分析 · 数学 2024-01-11 Cosmin Burtea , Maja Szlenk

We consider here the magneto-hydrodynamics (MHD) equations on the whole space. For the 3D case, in the setting of the weighted $L^2$ spaces we obtain a weak-strong uniqueness criterion provided that the velocity field and the magnetic field…

偏微分方程分析 · 数学 2020-07-14 Pedro Gabriel Fernández-Dalgo , Oscar Jarrín

In this paper, we prove the non-uniqueness of three-dimensional magneto-hydrodynamic (MHD) system in $C([0,T];L^2(\mathbb{T}^3))$ for any initial data in $H^{\bar{\beta}}(\mathbb{T}^3)$~($\bar{\beta}>0$), by exhibiting that the total energy…

偏微分方程分析 · 数学 2024-04-23 Changxing Miao , Weikui Ye