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In this paper, we establish the global existence and uniqueness of a mild solution of the so-called fractional Navier-Stokes equations with a small initial data in the critical Besov-Q space covering many already known function spaces.

偏微分方程分析 · 数学 2014-07-24 Pengtao Li , Jie Xiao , Qixiang Yang

We present a set of smooth infinite energy global solutions (without spatial symmetry) to the non-integrable, nonlinear Schr\"odinger equations on $\Bbb R$. These solutions are space-time quasi-periodic with two frequencies each. Previous…

偏微分方程分析 · 数学 2021-10-29 W. -M. Wang

We study the two-dimensional surface quasi-geostrophic equation on a bounded domain with a smooth boundary. Motivated by the three-dimensional incompressible Navier-Stokes equations and previous results in the entire space $\mathbb R^2$, we…

偏微分方程分析 · 数学 2024-09-09 Tsukasa Iwabuchi

We construct singular solutions to special Lagrangian equa- tions with subcritical phases and minimal surface systems. A priori estimate breaking families of smooth solutions are also produced cor- respondingly. A priori estimates for…

偏微分方程分析 · 数学 2011-05-13 Dake Wang , Yu Yuan

In the present study, we find that the surface quasi-geostrophic equation admits exact solutions, which evolve with time in quasi-stationary states. The solutions presented are available for any dissipation effect $\kappa (-\Delta)^\alpha$…

偏微分方程分析 · 数学 2021-05-04 Zhi-Min Chen

In this paper, we prove the the global existence of strong solutions to the three dimensional incompressible Boussinesq system with some special solenoidal initial data. In particular, these solutions can be expressed into the Fourier…

偏微分方程分析 · 数学 2024-10-14 Rulv Li , Shu Wang

The spatially periodic initial problem and Cauchy problem for nonlinear Schr\"odinger equations are considered. The existence and uniqueness of global solution with infinite smooth initial data $u_0$, i.e. $u_0,\;|u_0|^{2p}u_0\in…

偏微分方程分析 · 数学 2020-11-21 Yongqian Han

In this paper, we prove the global existence of strong solutions for the 3D incompressible inhomogeneous viscoelastic system. We do not assume the "initial state" assumption and the "div-curl" structure inspired by the works [59,61]. It is…

偏微分方程分析 · 数学 2024-03-04 Chengfei Ai , Yong Wang

We are interested in coupled semi-linear wave equations satisfying the null condition in two space dimensions, a basic model in nonlinear wave equations. Our aim is to establish global existence of smooth solutions to this system with large…

偏微分方程分析 · 数学 2025-07-21 Bingbing Ding , Shijie Dong , Gang Xu

We prove existence of global regular axially-symmetric solutions to the Navier-Stokes equations in a cylindrical domain. We assume the periodic boundary conditions on the top and the bottom of the cylinder, but on the lateral part we assume…

偏微分方程分析 · 数学 2023-04-04 Wojciech M. Zajaczkowski

We show existence of global strong solutions with large initial data on the irrotational part for the shallow-water system in dimension $N\geq 2$. We introduce a new notion of \textit{quasi-solutions} when the initial velocity is assumed to…

偏微分方程分析 · 数学 2012-01-27 Boris Haspot

We give a complete classification of Riemannian and Lorentzian surfaces of arbitrary codimension in a pseudo-sphere whose pseudo-spherical Gauss maps are of 1-type or, in particular, harmonic. In some cases a concrete global classification…

微分几何 · 数学 2016-04-25 Burcu Bektaş , Joeri Van der Veken , Luc Vrancken

We give a rigorous proof of the validity of the point vortex description for a class of inviscid generalized surface quasi-geostrophic models on the whole plane.

偏微分方程分析 · 数学 2018-12-14 Carina Geldhauser , Marco Romito

Some future global properties of cosmological solutions for the Einstein-Vlasov-Maxwell system with surface symmetry are presented. Global existence is proved, the homogeneous spacetimes are future complete for causal trajectories, and the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Sophonie Blaise Tchapnda

We provide global gradient estimates for solutions to a general type of nonlinear parabolic equations, possibly in a Riemannian geometry setting. Our result is new in comparison with the existing ones in the literature, in light of the…

偏微分方程分析 · 数学 2021-07-29 Cecilia Cavaterra , Serena Dipierro , Zu Gao , Enrico Valdinoci

The 2D quasi-geostrophic (QG) equation is a two dimensional model of the 3D incompressible Euler equations. When dissipation is included in the model then solutions always exist if the dissipation's wave number dependence is super-linear.…

偏微分方程分析 · 数学 2007-05-23 P. Constantin , D. Cordoba , J. Wu

The existence of global regular axially symmetric solutions to the Navier-Stokes equations in a bounded cylinder is proved. The main step in the proof is a proof of the Holder continuity of the swirl. This gives a possibility to prove…

偏微分方程分析 · 数学 2013-03-06 Wojciech Zajaczkowski

Consider the surface quasi-geostrophic equation with random diffusion, white in time. We show global existence and uniqueness in high probability for the associated Cauchy problem satisfying a Gevrey type bound. This article is inspired by…

偏微分方程分析 · 数学 2018-06-12 Tristan Buckmaster , Andrea Nahmod , Gigliola Staffilani , Klaus Widmayer

The classical one-phase Stefan problem (without surface tension) allows for a continuum of steady state solutions, given by an arbitrary (but sufficiently smooth) domain together with zero temperature. We prove global-in-time stability of…

偏微分方程分析 · 数学 2015-01-05 Mahir Hadžić , Steve Shkoller

We determine a considerable class of nonlinear partial differential equation systems which have global regular solutions. Uniqueness is not a direct general consequence of this method. The scheme can be applied to the incompressible Navier…

偏微分方程分析 · 数学 2015-06-02 Joerg Kampen