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We prove existence and uniqueness of a solution to the Cauchy problem corresponding to the equation \begin{equation*} \begin{cases} \partial_t u_{\varepsilon,\delta} +\mathrm{div} {\mathfrak f}_{\varepsilon,\delta}({\bf x},…

偏微分方程分析 · 数学 2024-09-02 Melanie Graf , Michael Kunzinger , Darko Mitrovic , Djordjie Vujadinovic

In this paper, we investigate the asymptotic behavior of solutions to the Cauchy problem for the scalar viscous conservation law where the far field states are prescribed. Especially, we deal with the case when the viscosity is of…

偏微分方程分析 · 数学 2018-05-01 Akitaka Matsumura , Natsumi Yoshida

We study nonnegative solutions of the Cauchy problem $$ \begin{cases} u_t+[\varphi(u)]_x=0 & \text{in } \mathbb{R}\times (0,T) \\ u=u_0\ge 0&\text{in } \mathbb{R}\times \{0\}, \end{cases} $$ where $u_0$ is a Radon measure and…

偏微分方程分析 · 数学 2019-07-25 Michiel Bertsch , Flavia Smarrazzo , Andrea Terracina , Alberto Tesei

The failure of uniform dependence on the data is an interesting property of classical solution for a hyperbolic system. In this paper, we consider the solution map of the Cauchy problem to the 2D viscous shallow water equations which is a…

偏微分方程分析 · 数学 2020-12-01 Jinlu Li , Yanghai Yu , Weipeng Zhu

Consider a strictly hyperbolic $n\times n$ system of conservation laws, where each characteristic field is either genuinely nonlinear or linearly degenerate. In this standard setting, it is well known that there exists a Lipschitz semigroup…

偏微分方程分析 · 数学 2023-05-19 Alberto Bressan , Graziano Guerra

This paper investigates the Cauchy problem for the barotropic compressible Navier-Stokes equations in $\mathbb{R}^2$ with the constant state as far field, which may be vacuum or non-vacuum. Under the assumption of a sufficiently large bulk…

偏微分方程分析 · 数学 2026-01-27 Qinghao Lei , Chengfeng Xiong

In this paper, we discuss the asymptotic behaviour of the weak solution to the Cauchy problem for the scalar viscous conservation law, with nonlinear Laplacian viscosity. Firstly, we obtain the existence, uniqueness and regularity of…

偏微分方程分析 · 数学 2023-12-07 Yechi Liu

In this paper, we study the decay rate in time to solutions of the Cauchy problem for the one-dimensional viscous conservation law where the far field states are prescribed. Especially, we deal with the case that the flux function which is…

偏微分方程分析 · 数学 2015-02-17 Natsumi Yoshida

It is well-known that due to the lack of a technique to obtain the a-priori $L^{\infty}$ estimate of the artificial viscosity solutions of the Cauchy problem for the one-dimensional Euler-Poisson (or hydrodynamic) model for semiconductors,…

偏微分方程分析 · 数学 2020-03-04 Yun-guang Lu

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

We consider a scalar, possibly degenerate parabolic equation with a source term, in several space dimensions. For initial data with bounded variation we prove the existence of solutions to the initial-value problem. Then we show that these…

偏微分方程分析 · 数学 2018-01-08 Giuseppe Coclite , Andrea Corli , Lorenzo di Ruvo

We consider the global existence and large-time asymptotic behavior of strong solutions to the Cauchy problem of the three-dimensional nonhomogeneous incompressible Navier-Stokes equations with density-dependent viscosity and vacuum. We…

偏微分方程分析 · 数学 2021-01-12 Cheng He , Jing Li , Boqiang Lü

The present paper deals with the Cauchy problem of a multi-dimensional non-conservative viscous compressible two-fluid system. We first study the well-posedness of the model in spaces with critical regularity indices with respect to the…

偏微分方程分析 · 数学 2020-10-20 Fuyi Xu , Meiling Chi , Lishan Liu , Yonghong Wu

Let $H$ be a bounded and Lipschitz continuous function. We consider discontinuous viscosity solutions of the Hamilton-Jacobi equation $U_{t}+H(U_x)=0$ and signed Radon measure valued entropy solutions of the conservation law…

偏微分方程分析 · 数学 2020-08-03 M. Bertsch , F. Smarrazzo , A. Terracina , A. Tesei

In this paper, we study the large-time behavior of solutions to a class of partially dissipative linear hyperbolic systems with applications in velocity-jump processes in several dimensions. Given integers $n,d\ge 1$, let $\mathbf…

偏微分方程分析 · 数学 2017-08-01 Thinh Tien Nguyen

We study BV solutions for a $2\times2$ system of hyperbolic balance laws. We show that when initial data have small total variation on $(-\infty,\infty)$ and small amplitude, and decay sufficiently fast to a constant equilibrium state as…

偏微分方程分析 · 数学 2023-09-07 Geng Chen , Yanni Zeng

This paper is concerned with the Cauchy problem for the modified two-dimensional (2D) nonhomogeneous incompressible Navier-Stokes equations with density-dependent viscosity. By fully using the structure of the system, we can obtain the key…

偏微分方程分析 · 数学 2026-02-02 Bing Yuan , Rong Zhang , Peng Zhou

We consider the simplest example of a time-dependent first order Hamilton-Jacobi equation, in one space dimension and with a bounded and Lipschitz continuous Hamiltonian which only depends on the spatial derivative. We show that if the…

偏微分方程分析 · 数学 2020-06-29 M. Bertsch , F. Smarrazzo , A. Terracina , A. Tesei

We present several examples of fundamental problems involving weak continuity and compactness for nonlinear partial differential equations, in which compensated compactness and related ideas have played a significant role. We first focus on…

偏微分方程分析 · 数学 2015-07-27 Gui-Qiang G. Chen

In this paper, we study the asymptotic behaviors of solutions to the inhomogeneous Navier-Stokes-Vlasov system in $\mathbb{R}^{3}\times\mathbb{R}^{3}$, where the initial fluid density is allowed to vanish. We establish the uniform bound of…

偏微分方程分析 · 数学 2025-05-12 Hai-Liang Li , Ling-Yun Shou , Yue Zhang