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Chemical and biochemical reactions can exhibit surprisingly different behaviours, ranging from multiple steady-state solutions to oscillatory solutions and chaotic behaviours. These types of systems are often modelled by a system of…

Analysis of PDEs · Mathematics 2025-07-03 Erika Hausenblas , Michael A. Högele , Tesfalem A. Tegegn

We study general linear transport-reaction systems on an arbitrary dimensional hypercube with periodic boundary conditions. Transport-reaction systems are often used to model the finite speed movement and interaction of particles, bacteria…

Analysis of PDEs · Mathematics 2022-10-04 Benedikt Geiger

We establish existence of global-in-time weak solutions to the one dimensional, compressible Navier-Stokes system for a viscous and heat conducting ideal polytropic gas (pressure $p=K\theta/\tau$, internal energy $e=c_v \theta$), when the…

Analysis of PDEs · Mathematics 2009-06-26 Helge Kristian Jenssen , Trygve Karper

In this work, we study a chemotaxis-Navier-Stokes model in a two-dimensional setting as below, \begin{eqnarray} \left\{ \begin{array}{llll} \displaystyle n_{t}+\mathbf{u}\cdot\nabla n=\Delta n-\nabla \cdot(n\nabla c)+f(n),…

Analysis of PDEs · Mathematics 2021-04-01 Mengyao Ding , Johannes Lankeit

An abstract framework for studying the asymptotic behavior of a dissipative evolutionary system $\mathcal{E}$ with respect to weak and strong topologies was introduced in [8] primarily to study the long-time behavior of the 3D Navier-Stokes…

Dynamical Systems · Mathematics 2007-05-23 Alexey Cheskidov

In this paper, we are concerned with the following prey-taxis system with fluid surrounding describing by the incompressible Navier-Stokes equations in a bounded domain with smooth boundary. We show that it has global classical solutions…

Analysis of PDEs · Mathematics 2018-11-15 Feng Zefu , Jin Hai-yang , Zhu Changjiang

We show the existence of global weak solutions of the 3D Navier-Stokes equations with initial velocity in the weighted spaces L 2 w$\gamma$ , where w $\gamma$ (x) = (1 + |x|) --$\gamma$ and 0 < $\gamma$ $\le$ 2, using new energy controls.…

Analysis of PDEs · Mathematics 2020-04-22 Pedro Gabriel Fernández-Dalgo , Pierre Gilles Lemarié-Rieusset

We consider a dissipative quantum fluid on the whole space $\mathbb{R}^d$ ($d\geq 1$) confined by an external harmonic potential. The dynamics of the quantum fluid is described by the Quantum Navier-Stokes (QNS) system which is a particular…

Analysis of PDEs · Mathematics 2025-09-24 Jérémy Faupin , Ingrid Lacroix-Violet , Julien Lequeurre

The flux-limited Keller--Segel system \begin{align*} \begin{cases} u_t = \Delta u - \chi \nabla \cdot (u|\nabla v|^{p-2}\nabla v), \\[] v_t = \Delta v - v + u^{\theta} \end{cases} \end{align*} is considered under homogeneous Neumann…

Analysis of PDEs · Mathematics 2025-02-06 Shohei Kohatsu

We study weak solutions ${\bf v}:U\times (0,T)\rightarrow \mathbb{R}^m$ of the nonlinear parabolic system $$ D\psi({\bf v}_t)=\text{div}DF(D{\bf v}), $$ where $\psi$ and $F$ are convex functions. This is a prototype for more general doubly…

Analysis of PDEs · Mathematics 2018-08-15 Ryan Hynd

This paper provides sufficient conditions for global asymptotic stability and global exponential stability, which can be applied to nonlinear, large-scale, uncertain discrete-time systems. The conditions are derived by means of vector…

Optimization and Control · Mathematics 2014-03-25 Iasson Karafyllis , Markos Papageorgiou

We consider the compressible Navier--Stokes system with the Coriolis force on the $3$D whole space. In this model, the Coriolis force causes the linearized solution to behave like a $4$th order dissipative semigroup $\{ e^{-t\Delta^2}…

Analysis of PDEs · Mathematics 2026-04-02 Mikihiro Fujii , Keiichi Watanabe

This paper deals with the fully parabolic attraction-repulsion chemotaxis system with signal-dependent sensitivities, \begin{align*} \begin{cases} u_t=\Delta u-\nabla \cdot (u\chi(v)\nabla v) +\nabla \cdot (u\xi(w)\nabla w), &x \in \Omega,\…

Analysis of PDEs · Mathematics 2021-04-09 Yutaro Chiyo , Masaaki Mizukami , Tomomi Yokota

This article is devoted to the derivation and analysis of a system of partial differential equations modeling a diffuse interface flow of two Newtonian incompressible magnetic fluids. The system consists of the incompressible Navier-Stokes…

Analysis of PDEs · Mathematics 2020-04-22 Martin Kalousek , Sourav Mitra , Anja Schlömerkemper

We prove global existence of nonnegative weak solutions for a strongly coupled, fourth order degenerate parabolic system governing the motion of two thin fluid layers in a porous medium when capillarity is the sole driving mechanism.

Analysis of PDEs · Mathematics 2012-07-24 Bogdan-Vasile Matioc

We investigate a regularity for weak solutions of the following generalized Leray equations \begin{equation*} (-\Delta)^{\alpha}V- \frac{2\alpha-1}{2\alpha}V+V\cdot\nabla V-\frac{1}{2\alpha}x\cdot \nabla V+\nabla P=0, \end{equation*} which…

Analysis of PDEs · Mathematics 2023-05-05 Baishun Lai , Changxing Miao , Xioaxin Zheng

This paper is devoted to the mathematical analysis of a nonlinear stochastic reaction-diffusion system modeling predator-prey interactions with prey-taxis and noises. Precisely, we detail the proof of the existence of weak martingale…

Analysis of PDEs · Mathematics 2023-04-05 Mostafa Bendahmane , Herbert Nzeti , Jacques Tagoudjeu , Mohamed Zagour

Hyperbolic-parabolic systems have spatially homogenous stationary states. When the dissipation is weak, one can derive weakly nonlinear-dissipative approximations that govern perturbations of these constant states. These approximations are…

Analysis of PDEs · Mathematics 2009-04-24 Ning Jiang , C. David Levermore

This paper is concerned with a class of reaction-diffusion system with density-suppressed motility \begin{equation*} \begin{cases} u_{t}=\Delta(\gamma(v) u)+\alpha u F(w), & x \in \Omega, \quad t>0, \\ v_{t}=D \Delta v+u-v, & x \in \Omega,…

Analysis of PDEs · Mathematics 2021-02-17 Wenbin Lyu , Zhi-An Wang

We consider density solutions for gradient flow equations of the form $u_t = \nabla \cdot ( \gamma(u) \nabla \mathrm N(u))$, where $\mathrm N$ is the Newtonian repulsive potential in the whole space $\mathbb R^d$ with the nonlinear convex…

Analysis of PDEs · Mathematics 2022-05-24 Jose A. Carrillo , David Gómez-Castro , Juan Luis Vázquez
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