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The initial value problem of the Zakharov system on two dimensional torus with general period is shown to be locally well-posed in the Sobolev spaces of optimal regularity, including the energy space. Proof relies on a standard iteration…

偏微分方程分析 · 数学 2011-09-19 Nobu Kishimoto

The paper investigates the existence of global attractors and their upper semicontinuity for a structural damped wave equation on $\mathbb{R}^{N}: u_{tt}-\Delta u+(-\Delta)^\alpha u_{t}+u_{t}+u+g(u)=f(x)$, where $\alpha\in (1/2, 1)$ is…

偏微分方程分析 · 数学 2019-05-17 Qionglei Chen , Pengyan Ding , Zhijian Yang

We develop a contraction-based framework to establish the existence and exponential stability of periodic solutions in planar nonsmooth dynamical systems governed by Filippov differential inclusions. The method integrates a time- and…

动力系统 · 数学 2025-07-10 Pascal Stiefenhofer

In this paper we present a comprehensive mechanism for the emergence of strange attractors in a two-parametric family of differential equations acting on a three-dimensional sphere. When both parameters are zero, its flow exhibits an…

动力系统 · 数学 2020-05-19 Alexandre A. P. Rodrigues

This paper is concerned with the long-time behavior of solutions for the three dimensional globally modified Navier-Stokes equations in a three-dimensional bounded domain. We prove the existence of a global attractor $\mathcal{A}_0$ in $H$…

动力系统 · 数学 2017-03-17 Fang Li , Bo You

We study the Cauchy problem for the Zakharov system in one space dimension with the Diriclet boundary conditions. We establish the global well-posedness and the growth of higher-order Sobolev norms of solutions to the Zakharov system by…

偏微分方程分析 · 数学 2024-03-27 Nobutatsu Kobayashi

In this paper, we establish the global well-posedness of the incompressible magnetohydrodynamics (MHD) system on $n-$dimensional $(n\geq 2)$ periodic boxes with either no magnetic diffusivity (non-resistive case) or no fluid viscosity…

偏微分方程分析 · 数学 2026-02-05 Quansen Jiu , Yaowei Xie , Zhihong Yan

We study the convergence of a Zakharov system driven by a time white noise, colored in space, to a multiplicative stochastic nonlinear Schr{\"o}dinger equation, as the ion-sound speed tends to infinity. In the absence of noise, the…

偏微分方程分析 · 数学 2024-09-24 Grégoire Barrué , Anne de Bouard , Arnaud Debussche

The sharp range of Sobolev spaces is determined in which the Cauchy problem for the classical Zakharov system is well-posed, which includes existence of solutions, uniqueness, persistence of initial regularity, and real-analytic dependence…

偏微分方程分析 · 数学 2024-03-11 Timothy Candy , Sebastian Herr , Kenji Nakanishi

We show an improved global well-posedness result for the Zakharov system in two space dimensions with minimal regularity assumptions for the data. Especially we are able to allow Schroedinger and wave data, which do not belong to H^1 and…

偏微分方程分析 · 数学 2012-05-22 Hartmut Pecher

We consider the asymptotic behavior of quasilinear parabolic equations posed in a family of unbounded domains that degenerates onto a lower dimensional set. Considering an auxiliary family of weighted Sobolev spaces we show the existence of…

偏微分方程分析 · 数学 2013-11-15 Ricardo P. Silva

We consider the compact case of one-dimensional quantum Zakharov system, as an initial-value problem with periodic boundary conditions. We apply the Bourgain norm method to show low regularity local well-posedness for a certain class of…

偏微分方程分析 · 数学 2026-02-23 Brian J Choi

We establish the well-posedness of a strongly damped semilinear wave equation equipped with nonlinear hyperbolic dynamic boundary conditions. Results are carried out with the presence of a parameter distinguishing whether the underlying…

偏微分方程分析 · 数学 2016-03-23 P. Jameson Graber , Joseph L. Shomberg

Kolmogorov flow in two dimensions - the two-dimensional Navier-Stokes equations with a sinusoidal body force - is considered over extended periodic domains to reveal localised spatiotemporal complexity. The flow response mimicks the forcing…

流体动力学 · 物理学 2015-06-16 Dan Lucas , Rich R. Kerswell

The Cahn-Hilliard-Navier-Stokes system is based on a well-known diffuse interface model and describes the evolution of an incompressible isothermal mixture of binary fluids. A nonlocal variant consists of the Navier-Stokes equations…

偏微分方程分析 · 数学 2015-05-30 Sergio Frigeri , Maurizio Grasselli

We study the smoothness properties of a global and nonautonomous topological conjugacy between a linear system and a quasilinear perturbation. The linear system exhibits a nonuniform exponential dichotomy with a nontrivial projector and…

动力系统 · 数学 2025-01-28 Álvaro Castañeda , Ignacio Huerta , Gonzalo Robledo

The paper is devoted to a modification of the classical Cahn-Hilliard equation proposed by some physicists. This modification is obtained by adding the second time derivative of the order parameter multiplied by an inertial coefficient…

偏微分方程分析 · 数学 2015-05-14 Maurizio Grasselli , Giulio Schimperna , Sergey Zelik

We consider the evolution of weak vanishing viscosity solutions to the critically dissipative surface quasi-geostrophic equation. Due to the possible non-uniqueness of solutions, we rephrase the problem as a set-valued dynamical system and…

偏微分方程分析 · 数学 2015-12-29 Michele Coti Zelati , Piotr Kalita

In this paper, we develop the well-posedness theory and uncover the noise-regularization effect on scattering for the stochastic Zakharov system in dimensions $d \geq 4$ and beyond the energy space. Our focus is particularly directed at the…

偏微分方程分析 · 数学 2026-04-14 Martin Spitz , Deng Zhang , Zhenqi Zhao

We study the hypoellipticity and solvability properties of a class of time-periodic evolution operators, with coefficients globally defined on $\mathbb{R}^d$ and growing polynomially with respect to the space variable. To this aim, we…

偏微分方程分析 · 数学 2025-04-04 Fernando de Ávila Silva , Matteo Bonino , Sandro Coriasco