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We show how the stability conditions for a system of interacting fermions that conventionally involve variations of thermodynamic potentials can be rewritten in terms of one- and two-particle correlators. We illustrate the applicability of…

A system of two operator equations is considered - one of pseudomonotone type and the other of strongly monotone type - both being strongly coupled. Conditions are given that allow to reduce the solvability of this system to a single…

泛函分析 · 数学 2014-04-23 Donat Wegner

Let a 1-d system of hyperbolic conservation laws, with two unknowns, be endowed with a convex entropy. We consider the family of small $BV$ functions which are global solutions of this equation. For any small $BV$ initial data, such global…

偏微分方程分析 · 数学 2022-11-07 Geng Chen , Sam G. Krupa , Alexis F. Vasseur

We introduce a stochastic system of interacting particles which is expected to furnish as the number of particles goes to infinity a stochastic approach of the 2-D Keller-Segel model. In this note, we prove existence and some uniqueness for…

概率论 · 数学 2016-02-01 Patrick Cattiaux , Laure Pédèches

We establish the existence of weak solutions of coupled systems of elliptic partial differential equations with quasimonotone nonlinearities in the domain interior and on the boundary. When the nonlinearities satisfy some monotonicity…

偏微分方程分析 · 数学 2025-11-27 Shalmali Bandyopadhyay , Briceyda B. Delgado , Nsoki Mavinga , Maria Amarakristi Onydio

In this work, we give sufficient conditions for the almost global asymptotic stability of a cascade in which the subsystems are only almost globally asymptotically stable. The result is extended to upper triangular systems of arbitrary…

最优化与控制 · 数学 2023-05-17 Jake Welde , Matthew D. Kvalheim , Vijay Kumar

Motivated by recent physics papers describing rules for natural network formation, we study an elliptic-parabolic system of partial differential equations proposed by Hu and Cai. The model describes the pressure field thanks to Darcy's type…

偏微分方程分析 · 数学 2014-05-09 Jan Haskovec , Peter Markowich , Benoit Perthame

In this paper, we are concerned with the controllability of a chemotaxis system of parabolic-elliptic type. By linearizing the nonlinear system into two separated linear equations to bypass the obstacle caused by the nonlinear drift term,…

最优化与控制 · 数学 2013-04-23 Bao-Zhu Guo , Liang Zhang

A doubly degenerate parabolic equation in non-divergent form with variable growth is investigated in this paper. In suitable spaces, we prove the existence of weak solutions of the equation for cases $1\leq m < 2$ and $m\geq 2$ in different…

偏微分方程分析 · 数学 2024-04-24 Jingfeng Shao , Zhichang Guo , Zhongxiang Zhou

This paper analytically investigates the Darcy-Poisson-Nernst-Planck system. This system is a mathematical model for electrolyte solutions. In this paper, we consider electrolyte solutions, which consist of a neutral fluid and multiple…

偏微分方程分析 · 数学 2016-05-25 Matthias Herz , Peter Knabner

We consider the Vlasov-Poisson-Landau system, a classical model for a dilute collisional plasma interacting through Coulombic collisions and with its self-consistent electrostatic field. We establish global stability and well-posedness near…

偏微分方程分析 · 数学 2022-01-19 Hongjie Dong , Yan Guo , Zhimeng Ouyang

We consider two statistically independent systems described by the same entropy belonging to the two-parameter family of Sharma-Mittal. Assuming a weak interaction among the systems, allowing in this way an exchange of heat and work, we…

统计力学 · 物理学 2009-11-11 A. M. Scarfone

The existence and uniqueness of weak solutions is shown for a system related to the Willis model of elastodynamics. Both the whole space case and the case of a bounded smooth domain are studied. To this end the equations are reformulated as…

偏微分方程分析 · 数学 2025-11-27 Thomas Blesgen , Patrizio Neff

This paper is concerned with a kinetic model of a Vlasov-Fokker-Planck system used to describe the evolution of two species of particles interacting through a potential and a thermal reservoir at given temperature. We prove that at low…

偏微分方程分析 · 数学 2023-08-29 Zhu Zhang

In this paper, we study the spatial propagation dynamics of a parabolic-elliptic chemotaxis system with logistic source which reduces to the well-known Fisher-KPP equation without chemotaxis. It is known that for fast decaying initial…

偏微分方程分析 · 数学 2021-08-23 Zhi-An Wang , Wen-Bing Xu

A symmetrical cubic discrete coupled logistic equation is proposed to model the symbiotic interaction of two isolated species. The coupling depends on the population size of both species and on a positive constant $\lambda$, named the…

适应与自组织系统 · 物理学 2007-05-23 Ricardo Lopez-Ruiz , Daniele Fournier-Prunaret

We study the steady states and dynamics of a thin film-type equation with non-conserved mass in one dimension. The evolution equation is a nonlinear fourth-order degenerate parabolic PDE motivated by a model of volatile viscous fluid films…

偏微分方程分析 · 数学 2019-10-29 Hangjie Ji , Thomas P. Witelski

We consider backward problems for semilinear coupled parabolic systems in bounded domains. We prove conditional stability estimates for linear and semilinear systems of strongly coupled parabolic equations involving general semilinearities.…

偏微分方程分析 · 数学 2024-05-07 S. E. Chorfi , M. Yamamoto

We propose new results for the existence and uniqueness of a general nonparametric and nonseparable competitive equilibrium with substitutes. These results ensure the invertibility of a general competitive system. The existing literature…

综合经济学 · 经济学 2023-09-21 Liang Chen , Eugene Choo , Alfred Galichon , Simon Weber

In this paper, we consider the exogenous chemotaxis system with physical mixed zero-flux and Dirichlet boundary conditions in one dimension. Since the Dirichlet boundary condition can not contribute necessary estimates for the…

偏微分方程分析 · 数学 2021-01-20 Guangyi Hong , Zhian Wang