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This paper studies the Cauchy problem for a helical vortex filament evolving by the 3D incompressible Navier-Stokes equations. We prove global-in-time well-posedness and smoothing of solutions with initial vorticity concentrated on a helix.…

偏微分方程分析 · 数学 2024-02-19 Francisco Gancedo , Antonio Hidalgo-Torné

We study the well-posedness of the Cauchy problem for a fractional porous medium equation with a varying density. We establish existence of weak energy solutions; uniqueness and nonuniqueness is studied as well, according with the behavior…

偏微分方程分析 · 数学 2013-02-04 Fabio Punzo , Gabriele Terrone

We prove that certain types of measure-valued mappings are monokinetic i.e. the distribution of velocity is concentrated in a Dirac mass. These include weak measure-valued solutions to the strongly singular Cucker-Smale model with…

偏微分方程分析 · 数学 2022-11-04 Michał Fabisiak , Jan Peszek

This paper is concerned with the existence, uniqueness and nonlinear stability of stationary solutions to the Cauchy problem of the full compressible Navier-Stokes-Korteweg system effected by external force of general form in…

偏微分方程分析 · 数学 2012-04-03 Zhengzheng Chen , Huijiang Zhao

In the first part of this paper, we show that the Cauchy problem for wave propagation in some static spacetimes presenting a singular time-like boundary is well posed, if we only demand the waves to have finite energy, although no boundary…

广义相对论与量子宇宙学 · 物理学 2014-11-20 Ricardo E. Gamboa Saravi , Marcela Sanmartino , Philippe Tchamitchian

We prove that the Cauchy problem for the KP-I equation is globally well-posed for initial data which are localized perturbations (of arbitrary size) of a non-localized (i.e. not decaying in all directions) traveling wave solution (e.g. the…

偏微分方程分析 · 数学 2009-11-11 Luc Molinet , Jean-Claude Saut , Nikolay Tzvetkov

We study the Cauchy problem for a kinetic equation arising in the weak turbulence theory for the cubic nonlinear Schr\"odinger equation. We define suitable concepts of weak and mild solutions and prove local and global well posedness…

数学物理 · 物理学 2013-05-27 Miguel Escobedo , Juan J. L. Velázquez

We are interested in the classical ill-posed Cauchy problem for the Laplace equation. One method to approximate the solution associated with compatible data consists in considering a family of regularized well-posed problems depending on a…

偏微分方程分析 · 数学 2019-06-21 Laurent Bourgeois , Lucas Chesnel

We consider the Cauchy problem for weakly hyperbolic $m$-th order partial differential equations with coefficients low-regular in time and smooth in space. It is well-known that in general one has to impose Levi conditions to get $C^\infty$…

偏微分方程分析 · 数学 2017-11-17 Daniel Lorenz , Michael Reissig

We establish the existence of solutions of the Cauchy problem for a higher-order semilinear parabolic equation by introducing a new majorizing kernel. We also study necessary conditions on the initial data for the existence of local-in-time…

偏微分方程分析 · 数学 2019-09-13 Kazuhiro Ishige , Tatsuki Kawakami , Shinya Okabe

We construct bounded classical solutions of the Boltzmann equation in the whole space without specifying any limit behaviors at the spatial infinity and without assuming the smallness condition on initial data. More precisely, we show that…

偏微分方程分析 · 数学 2010-10-28 Radjesvarane Alexandre , Yoshinori Morimoto , Seiji Ukai , Chao-Jiang Xu , Tong Yang

This paper is devoted to the analysis of the incompressible Euler equation in a time-dependent fluid domain, whose interface evolution is governed by the law of linear elasticity. Our main result asserts that the Cauchy problem is globally…

偏微分方程分析 · 数学 2025-04-02 Thomas Alazard , Chengyang Shao , Haocheng Yang

Solutions of the Cauchy problem for the wave equation on a non-globally hyperbolic spacetime, which contains closed timelike curves (time machines) are considered. It is proved, that there exists a solution of the Cauchy problem, it is…

高能物理 - 理论 · 物理学 2009-11-13 I. Ya. Arefeva , T. Ishiwatari , I. V. Volovich

We show the short time existence and uniqueness of solutions to the Cauchy problem for fully nonlinear systems of arbitrary even order on closed manifolds which are strongly parabolic at the initial values. The proof uses a linearization…

微分几何 · 数学 2015-07-21 Hong Huang

This paper concerns a Fokker-Planck equation on the positive real line modeling nucleation and growth of clusters. The main feature of the equation is the dependence of the driving vector field and boundary condition on a non-local order…

偏微分方程分析 · 数学 2020-06-04 Joseph G. Conlon , André Schlichting

The dynamics of dilute electrons can be modeled by the fundamental one-species Vlasov-Poisson-Boltzmann system which describes mutual interactions of the electrons through collisions in the self-consistent electrostatic field. For cutoff…

偏微分方程分析 · 数学 2015-06-19 Qinghua Xiao , Linjie Xiong , Huijiang Zhao

This paper studies the Cauchy problem for a one-dimensional nonlinear peridynamic model describing the dynamic response of an infinitely long elastic bar. The issues of local well-posedness and smoothness of the solutions are discussed. The…

偏微分方程分析 · 数学 2020-08-04 H. A. Erbay , A. Erkip , G. M. Muslu

We consider the Cauchy problem for incompressible viscoelastic fluids in the whole space $\mathbb{R}^d$ ($d=2,3$). By introducing a new decomposition via Helmholtz's projections, we first provide an alternative proof on the existence of…

偏微分方程分析 · 数学 2023-07-28 Xianpeng Hu , Hao Wu

The Cauchy problem for a multidimensional linear transport equation with discontinuous coefficient is investigated. Provided the coefficient satisfies a one-sided Lipschitz condition, existence, uniqueness and weak stability of solutions…

偏微分方程分析 · 数学 2007-05-23 Francois James , Simona Mancini , Francois Bouchut

By establishing a sharp Strichartz estimate for the velocity and density, we prove the local well-posedness of solutions for the Cauchy problem of two-dimensional compressible Euler equations, where the initial velocity, density, and…

偏微分方程分析 · 数学 2025-05-27 Huali Zhang