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This article deals with a class of chemotaxis systems describing mechanisms from mathematical biology. In the specific, for a rather general class of attraction-repulsion models, with nonlinear productions, diffusion, sensitivities and…

偏微分方程分析 · 数学 2023-11-14 Alessandro Columbu , Rafael Diaz Fuentes , Silvia Frassu

This work deals with a chemotaxis model where an external source involving a sub and superquadratic growth effect contrasted by nonlocal dampening reaction influences the motion of a cell density attracted by a chemical signal. We study the…

偏微分方程分析 · 数学 2023-07-28 Yutaro Chiyo , Fatma Ga mze D Düzgün , Silvia Frassu , Giuseppe Viglialoro

This paper deals with a parabolic-elliptic chemotaxis system with nonlocal type of source in the whole space. It's proved that the initial value problem possesses a unique global solution which is uniformly bounded. Here we identify the…

偏微分方程分析 · 数学 2017-11-28 Shen Bian , Li Chen , Evangelos A. Latos

We study a chemotaxis-growth system with nonlinear local and nonlocal reactions and gradient-dependent damping. Under suitable conditions on the system parameters and spatial dimension, we prove that solutions exist globally in time and…

偏微分方程分析 · 数学 2025-07-29 Tongxing Li , Silvia Frassu , Giuseppe Viglialoro

This paper deals with unbounded solutions to a class of chemotaxis systems. In particular, for a rather general attraction-repulsion model, with nonlinear productions, diffusion, sensitivities and logistic term, we detect Lebesgue spaces…

偏微分方程分析 · 数学 2023-03-28 Alessandro Columbu , Silvia Frassu , Giuseppe Viglialoro

We consider a reaction-diffusion system where some components react and diffuse on the boundary of a region, while other components diffuse in the interior and react with those on the boundary through mass transport. We establish criteria…

偏微分方程分析 · 数学 2015-12-31 Vandana Sharma , Jeff Morgan

We study a chemotaxis-consumption mechanism, in which some chemical signal and cells density interact each other. In order to control the concentration of such a population, sources involving gradient nonlinearities, which introduce a…

偏微分方程分析 · 数学 2025-01-24 Daniel Acosta Soba , Alessandro Columbu , Giuseppe Viglialoro

This paper deals with the quasilinear fully parabolic attraction-repulsion chemotaxis system \begin{align*} u_t=\nabla \cdot (D(u)\nabla u) -\nabla \cdot (G(u)\chi(v)\nabla v) +\nabla\cdot(H(u)\xi(w)\nabla w), \quad v_t=d_1\Delta v+\alpha…

偏微分方程分析 · 数学 2021-08-10 Yutaro Chiyo , Tomomi Yokota

We consider a chemotaxis-fluid system involving nonlinear cell diffusion of porous medium type, signal consumption by cells, and rather general, possibly matrix-valued, chemotactic sensitivities. It is shown that if the corresponding…

偏微分方程分析 · 数学 2015-01-29 Michael Winkler

This series of papers is concerned with the global solvability, boundedness, regularity, and uniqueness of weak solutions to the following parabolic-parabolic chemotaxis system with a logistic source and chemical consumption:…

偏微分方程分析 · 数学 2025-09-09 Zulaihat Hassan , Wenxian Shen , Yuming Paul Zhang

The source term in a reaction-diffusion system, in general, does not involve explicit time dependence. A class of self-limiting growth models dealing with animal and tumor growth and bacterial population in a culture, on the other hand are…

生物物理 · 物理学 2009-11-07 Sandip Kar , Suman Kumar Banik , Deb Shankar Ray

This paper is concerned with the spatio-temporal dynamics of nonnegative bounded entire solutions of some reaction-diffusion equations in R N in any space dimension N. The solutions are assumed to be localized in the past. Under certain…

偏微分方程分析 · 数学 2020-05-18 F. Hamel , H Ninomiya

We give an application of the Crandall-Rabinowitz theorem on local bifurcation to a system of nonlinear parabolic equations with nonlocal reaction and cross-diffusion terms as well as nonlocal initial conditions. The system arises as…

偏微分方程分析 · 数学 2011-01-21 Christoph Walker

Reaction-diffusion equations are studied on bounded, time-periodic domains with zero Dirichlet boundary conditions. The long-time behaviour is shown to depend on the principal periodic eigenvalue of a transformed periodic-parabolic problem.…

偏微分方程分析 · 数学 2023-07-18 Jane Allwright

We consider the parabolic-elliptic model for the chemotaxis with fractional (anomalous) diffusion. Global-in-time solutions are constructed under (nearly) optimal assumptions on the size of radial initial data. Moreover, criteria for blowup…

偏微分方程分析 · 数学 2017-05-10 Piotr Biler , Grzegorz Karch , Jacek Zienkiewicz

This work concerns with a class of chemotaxis models in which external sources, comprising nonlocal and gradient-dependent damping reactions, influence the motion of a cell density attracted by a chemical signal. The mechanism of the two…

偏微分方程分析 · 数学 2024-06-17 Rafael Díaz Fuentes , Silvia Frassu , Giuseppe Viglialoro

This article deals with an initial-boundary value problem for the coupled chemotaxis-haptotaxis system with nonlinear diffusion \begin{align*} u_t=&\nabla\cdot(D(u)\nabla u)-\chi\nabla\cdot(u\nabla v)-\xi\nabla\cdot(u\nabla w)+\mu…

偏微分方程分析 · 数学 2016-04-20 Yan Li , Johannes Lankeit

We study some zero-flux attraction-repulsion chemotaxis models, with nonlinear production rates for the chemorepellent and the chemoattractant. This paper partially improves some known results in the literature and moreover solves an open…

偏微分方程分析 · 数学 2022-08-12 Alessandro Columbu , Silvia Frassu , Giuseppe Viglialoro

We consider the following chemotaxis system under homogeneous Neumann boundary conditions in a smooth, open, bounded domain $\Omega \subset \mathbb{R}^n$ with $n \geq 3$: \begin{equation*} \begin{cases} u_t = \Delta u - \chi \nabla \cdot…

偏微分方程分析 · 数学 2025-03-12 Minh Le

This work deals with a fully parabolic chemotaxis model with nonlinear production and chemoattractant. The problem is formulated on a bounded domain and, depending on a specific interplay between the coefficients associated to such…

偏微分方程分析 · 数学 2020-05-19 Silvia Frassu , Giuseppe Viglialoro
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