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The form of the initial value constraints in Ashtekar's hamiltonian formulation of general relativity is recalled, and the problem of solving them is compared with that in the traditional metric variables. It is shown how the general…

广义相对论与量子宇宙学 · 物理学 2007-05-23 R. Capovilla , J. Dell , T. Jacobson

This paper proves the existence of small-amplitude global-in-time unique mild solutions to both the Landau equation including the Coulomb potential and the Boltzmann equation without angular cutoff. Since the well-known works (Guo, 2002)…

偏微分方程分析 · 数学 2020-09-18 Renjun Duan , Shuangqian Liu , Shota Sakamoto , Robert M. Strain

We study global well-posedness of strong solutions for the nonhomogeneous Navier-Stokes equations with density-dependent viscosity and initial density allowing vanish in $\mathbb{R}^2$. Applying a logarithmic interpolation inequality and…

偏微分方程分析 · 数学 2021-03-01 Xin Zhong

We consider the Cauchy problem for the full compressible Navier-Stokes equations with vanishing of density at infinity in R3. Our main purpose is to prove the existence (and uniqueness) of global strong and classical solutions and study the…

偏微分方程分析 · 数学 2017-02-22 Huanyao Wen , Changjiang Zhu

We study the initial-boundary value problem for the coupled Klein-Gordon-Schr\"{o}dinger equations in a domain in $\mathbb R^N$ with $N \leq 4$. Under natural assumptions on the initial data, we prove the existence and uniqueness of global…

偏微分方程分析 · 数学 2022-12-19 Tohru Ozawa , Kenta Tomioka

The paper is devoted to proving an existence and uniqueness result for generalized solutions to semilinear wave equations with a small nonlinearity in space dimensions 1, 2, 3. The setting is the one of Colombeau algebras of generalized…

偏微分方程分析 · 数学 2019-09-13 Hideo Deguchi , Michael Oberguggenberger

In this paper, we investigate the existence of a global classical solution to 3D Cauchy problem of the isentropic compressible Navier-Stokes equations with large initial data and vacuum. Precisely, when the far-field density is vacuum…

偏微分方程分析 · 数学 2015-07-07 Xiaofeng Hou , Hongyun Peng , Changjiang Zhu

We consider the Cauchy problem for the fractional nonlinear Schr\"{o}dinger equation (FNLS) on the one-dimensional torus with cubic nonlinearity and high dispersion parameter $\alpha > 1$, subject to a Gaussian random initial data of…

偏微分方程分析 · 数学 2022-05-31 Justin Forlano , Leonardo Tolomeo

An initial-boundary value problem for the 3D Zakharov-Kuznetsov equation posed on bounded domains is considered. Existence and uniqueness of a global regular solution as well as exponential decay of the $H^2$-norm for small initial data are…

偏微分方程分析 · 数学 2015-09-30 Nikolai Larkin

In three previous papers by the two first authors, classes of initial data to the three dimensional, incompressible Navier-Stokes equations were presented, generating a global smooth solution although the norm of the initial data may be…

偏微分方程分析 · 数学 2008-07-09 Jean-Yves Chemin , Isabelle Gallagher , Marius Paicu

We prove a global well-posedness and regularity result of strong solutions to a slightly modified Michelson-Sivashinsky equation in any spatial dimension and in the absence of physical boundaries. Local-in-time well-posedness (and…

偏微分方程分析 · 数学 2021-05-17 Hussain Ibdah

A global solvability result of the Cauchy problem of the two-species Vlasov-Maxwell-Landau system near a given global Maxwellian is established by employing an approach different than that of [5]. Compared with that of [5], the minimal…

偏微分方程分析 · 数学 2013-09-26 Yuanjie Lei , Huijiang Zhao

In to previous papers by the authors, classes of initial data to the three dimensional, incompressible Navier-Stokes equations were presented, generating a global smooth solution although the norm of the initial data may be chosen…

偏微分方程分析 · 数学 2007-10-31 Jean-Yves Chemin , Isabelle Gallagher

This paper establishes the global well-posedness of strong solutions to the nonhomogeneous magnetic B\'enard system with positive density at infinity in the whole space $\mathbb{R}^2$. More precisely, we obtain the global existence and…

偏微分方程分析 · 数学 2024-07-23 Jieqiong Liu

We prove global existence of solutions to the Cauchy problem for the compressible Navier-Stokes equations in Euclidean spaces, given initial data with small norms in Besov and critical weighted Besov spaces. Global existence and a priori…

偏微分方程分析 · 数学 2023-12-12 Dáithí Ó hAodha

We are concerned with wave equations associated to some Liouville-type problems on compact surfaces, focusing on sinh-Gordon equation and general Toda systems. Our aim is on one side to develop the analysis for wave equations associated to…

偏微分方程分析 · 数学 2020-09-08 Weiwei Ao , Aleks Jevnikar , Wen Yang

We consider the Cauchy problem of massless Dirac-Maxwell equations on an asymptotically flat background and give a global existence and uniqueness theorem for initial values small in an appropriate weighted Sobolev space. The result can be…

偏微分方程分析 · 数学 2016-03-02 Nicolas Ginoux , Olaf Müller

In this paper we study both the Cauchy problem and the initial boundary value problem for the equation $\partial_tu+\mbox{div}\left(\nabla\Delta u-{\bf g}(\nabla u)\right)=0$. This equation has been proposed as a continuum model for kinetic…

偏微分方程分析 · 数学 2017-07-25 Xiangsheng Xu

The Lagrangian Averaged Navier-Stokes (LANS) equations are a recently derived approximation to the Navier-Stokes equations. Existence of global solutions for the LANS equation has been proven for initial data in the Sobolev space…

偏微分方程分析 · 数学 2012-02-02 Nathan Pennington

We prove global-in-time existence and uniqueness of measure solutions of a nonlocal interaction system of two species in one spatial dimension. For initial data including atomic parts we provide a notion of gradient-flow solutions in terms…

偏微分方程分析 · 数学 2019-06-26 J. A. Carrillo , M. Di Francesco , A. Esposito , S. Fagioli , M. Schmidtchen