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Using the framework of Colombeau algebras of generalized functions, we prove the existence and uniqueness results for global generalized solvability of semilinear hyperbolic systems with nonlinear nonlocal boundary conditions. We admit…

偏微分方程分析 · 数学 2025-12-10 Irina Kmit

By using an equivalent form of the uniform Lopatinski condition for 1-shocks, we prove that the stability condition found by the energy method in [A. Morando, Y. Trakhinin, P. Trebeschi, Structural stability of shock waves in 2D…

偏微分方程分析 · 数学 2021-02-18 Yuri Trakhinin

This paper is devoted to strictly hyperbolic systems and equations with non-smooth coefficients. Below a certain level of smoothness, distributional solutions may fail to exist. We construct generalised solutions in the Colombeau algebra of…

偏微分方程分析 · 数学 2011-08-12 Claudia Garetto , Michael Oberguggenberger

We address nonautonomous initial boundary value problems for decoupled linear first-order one-dimensional hyperbolic systems, investigating the phenomenon of finite time stabilization. We establish sufficient and necessary conditions…

偏微分方程分析 · 数学 2025-12-10 Irina Kmit , Natalya Lyul'ko

We propose a necessary and sufficient condition for the well-posedness of the linear non-homogeneous Grad moment equations in half-space. The Grad moment system is based on Hermite expansion and regarded as an efficient reduction model of…

偏微分方程分析 · 数学 2022-09-13 Ruo Li , Yichen Yang

In this paper, we study an inverse problem for linear parabolic system with variable diffusion coefficients subject to dynamic boundary conditions. We prove a global Lipschitz stability for the inverse problem involving a simultaneous…

偏微分方程分析 · 数学 2022-01-04 E. M. Ait Ben Hassi , S. E. Chorfi , L. Maniar , O. Oukdach

In this paper, we study a free boundary problem for compressible spherically symmetric Navier-Stokes equations without a solid core. Under certain assumptions imposed on the initial data, we obtain the global existence and uniqueness of the…

偏微分方程分析 · 数学 2007-06-13 Ting Zhang , Daoyuan Fang

We study the well-posedness and stability of an impedance passive infinite-dimensional linear system under nonlinear feedback of the form $u(t)=\phi(v(t)-y(t))$, where $\phi$ is a monotone function. Our first main result introduces…

最优化与控制 · 数学 2025-06-19 Anthony Hastir , Lassi Paunonen

In this paper on hyperbolic systems of conservation laws in one space dimension, we give a complete picture of stability for all solutions to the Riemann problem which contain only extremal shocks. We study stability of the Riemann problem…

偏微分方程分析 · 数学 2021-03-02 Sam G. Krupa

We extend the Kreiss--Majda theory of stability of hyperbolic initial--boundary-value and shock problems to a class of systems, notably including the equations of magnetohydrodynamics (MHD), for which Majda's block structure condition does…

偏微分方程分析 · 数学 2007-05-23 Guy Métivier , Kevin Zumbrun

We summarize recent progress on one- and multi-dimensional stability of viscous shock wave solutions of compressible Navier--Stokes equations and related symmetrizable hyperbolic--parabolic systems, with an emphasis on the large-amplitude…

数学物理 · 物理学 2007-05-23 Kevin Zumbrun

A system of partial differential equations representing stochastic neural fields was recently proposed with the aim of modelling the activity of noisy grid cells when a mammal travels through physical space. The system was rigorously…

偏微分方程分析 · 数学 2023-07-18 José Antonio Carrillo , Pierre Roux , Susanne Solem

We prove short-time well-posedness and existence of global weak solutions of the Beris--Edwards model for nematic liquid crystals in the case of a bounded domain with inhomogeneous mixed Dirichlet and Neumann boundary conditions. The system…

偏微分方程分析 · 数学 2013-11-15 Helmut Abels , Georg Dolzmann , YuNing Liu

We prove weighted mixed $L_{p}(L_{q})$-estimates, with $p,q\in(1,\infty)$, for higher-order elliptic and parabolic equations on the half space $\mathbb{R}^{d+1}_{+}$ and on domains with general boundary conditions which satisfy the…

偏微分方程分析 · 数学 2018-12-17 Hongjie Dong , Chiara Gallarati

In this paper, we present a numerical strategy to check the strong stability (or GKS-stability) of one-step explicit totally upwind schemes in 1D with numerical boundary conditions. The underlying approximated continuous problem is the…

数值分析 · 数学 2023-01-19 Benjamin Boutin , Pierre Le Barbenchon , Nicolas Seguin

We prove that for a wide family of non-uniformly hyperbolic maps and hyperbolic potentials we have equilibrium stability, i.e. the equilibrium states depend continuously on the dynamics and the potential. For this we deduce that the…

动力系统 · 数学 2017-11-10 Jose F. Alves , Vanessa Ramos , Jaqueline Siqueira

In this paper we establish well posedness of the Neumann problem with boundary data in $L^2$ or the Sobolev space $\dot W^2_{-1}$, in the half space, for linear elliptic differential operators with coefficients that are constant in the…

偏微分方程分析 · 数学 2017-03-22 Ariel Barton , Steve Hofmann , Svitlana Mayboroda

In this paper, we prove the local well-posedness of the free boundary problem in incompressible elastodynamics under a mixed type stability condition, i.e., for each point of the free boundary, at least one of the Taylor sign condition…

偏微分方程分析 · 数学 2019-11-15 Hui Li , Wei Wang , Zhifei Zhang

We extend our recent work with K. Zumbrun on long-time stability of multi-dimensional noncharacteristic viscous boundary layers of a class of symmetrizable hyperbolic-parabolic systems. Our main improvements are (i) to establish the…

偏微分方程分析 · 数学 2008-12-31 Toan Nguyen

We are interested in the feedback stabilization of systems described by Hamilton-Jacobi type equations in $\mathbb{R}^n$. A reformulation leads to a a stabilization problem for a multi-dimensional system of $n$ hyperbolic partial…

最优化与控制 · 数学 2024-01-26 Michael Herty , Ferdinand Thein