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A class of variational models describing ecological systems of k species competing for the same resources is investigated. The occurrence of coexistence in minimal energy solutions is discussed and positive results are proven for suitably…

Analysis of PDEs · Mathematics 2011-03-07 Monica Conti , Veronica Felli

One of the classical models in mathematical biology is the Lotka-Volterra competition model, describing the dynamics of two populations competing for resources. Two possible regimes in this system are given by their coexistence or…

Analysis of PDEs · Mathematics 2024-11-04 Valentina Bucur , Dr Bakhtier Vasiev

We study the reaction-diffusion system, its stationary solutions, the behavior of the system near them and discuss similarities and differences for different boundary conditions.

Analysis of PDEs · Mathematics 2011-09-14 Bogdan Przeradzki

In this paper, we are concerned with a class of parabolic-elliptic chemotaxis systems encompassing the prototype $$\left\{\begin{array}{lll} &u_t = \nabla\cdot(\nabla u-\chi u\nabla v)+f(u), & x\in \Omega, t>0, \\[0.2cm] &0= \Delta v…

Analysis of PDEs · Mathematics 2018-07-18 Zhi-an Wang , Tian Xiang

This paper is concerned with the global existence and stability of solution to the quasi linear hyperbolic-parabolic chemotaxis system on the half-line,which was proposed in[1] to primarily describe the formation of coherent vascular…

Analysis of PDEs · Mathematics 2025-09-25 Nangao Zhang

Ecological trade-offs between species are often invoked to explain species coexistence in ecological communities. However, few mathematical models have been proposed for which coexistence conditions can be characterized explicitly in terms…

Populations and Evolution · Quantitative Biology 2013-05-21 Bart Haegeman , Tewfik Sari , Rampal S. Etienne

This paper explains the uniqueness of positive steady state of general Lotka-Volterra competition model of two species of animals in the same environment.

Analysis of PDEs · Mathematics 2008-06-24 Joon Hyuk Kang

In this paper we study the regularity of weak solutions to an elliptic-parabolic system modeling natural network formation. The system is singular and involves cubic nonlinearity. Our investigation reveals that weak solutions are H\"{o}lder…

Analysis of PDEs · Mathematics 2022-12-05 Xiangsheng Xu

We consider a hyperbolic-parabolic system arising from a chemotaxis model in angiogenesis, which is described by a Keller-Segel equation with singular sensitivity. It is known to allow viscous shocks (so-called traveling waves). We…

Analysis of PDEs · Mathematics 2019-04-30 Kyudong Choi , Moon-Jin Kang , Young-Sam Kwon , Alexis Vasseur

We are interested in the long time behavior of a two-type density-dependent biological population conditioned to non-extinction, in both cases of competition or weak cooperation between the two species. This population is described by a…

Probability · Mathematics 2008-11-04 Patrick Cattiaux , Sylvie Méléard

We are interested in the dynamical behaviors of solutions to a parabolic-parabolic chemotaxis-consumption model with a volume-filling effect on a bounded interval, where the physical no-flux boundary condition for the bacteria and mixed…

Analysis of PDEs · Mathematics 2024-12-17 Xiaowen Li , Jingyu Li

A natural condition on the structure of the underlying chemical reaction network, namely weak reversibility, is shown to guarantee the existence of an equilibrium (steady state) in each positive stoichiometric compatibility class for the…

Quantitative Methods · Quantitative Biology 2011-11-14 Jian Deng , Christopher Jones , Martin Feinberg , Adrian Nachman

This paper is concerned with the 3-dimensional two-species chemotaxis-Navier--Stokes system with Lotka--Volterra competitive kinetics under homogeneous Neumann boundary conditions and initial conditions. Recently, in the 2-dimensional…

Analysis of PDEs · Mathematics 2017-10-04 Misaki Hirata , Shunsuke Kurima , Masaaki Mizukami , Tomomi Yokota

In this article, we study the global dynamics of a discrete two dimensional competition model. We give sufficient conditions on the persistence of one species and the existence of local asymptotically stable interior period-2 orbit for this…

Dynamical Systems · Mathematics 2011-02-14 Yun Kang , Hal Smith

This paper deals with the quasilinear attraction-repulsion chemotaxis system \begin{align*} \begin{cases} u_t=\nabla\cdot \big((u+1)^{m-1}\nabla u -\chi u(u+1)^{p-2}\nabla v +\xi u(u+1)^{q-2}\nabla w\big),\\[] 0=\Delta v+\alpha u-\beta…

Analysis of PDEs · Mathematics 2022-03-22 Yutaro Chiyo

We prove existence of global weak solutions to the chemotaxis system $ u_t=\Delta u - \nabla\cdot (u\nabla v) +\kappa u -\mu u^2 $ $ v_t=\Delta v-v+u $ under homogeneous Neumann boundary conditions in a smooth bounded convex domain…

Analysis of PDEs · Mathematics 2014-07-21 Johannes Lankeit

This paper deals with the solution of following chemotaxis system with competitive kinetics and nonlocal terms \begin{eqnarray*} \left\{ \begin{array}{llll} u_t=d_1\Delta u-\chi_1\nabla\cdot(u\nabla w)+u\left(a_0-a_1u-a_{2}v-a_3\int_\Omega…

Analysis of PDEs · Mathematics 2020-08-03 Guangyu Xu

We perform stability analysis of a kinetic bacterial chemotaxis model of bacterial self-organization, assuming that bacteria respond sharply to chemical signals. The resulting discontinuous tumbling kernel represents the key challenge for…

Analysis of PDEs · Mathematics 2024-06-27 Vincent Calvez , Gianluca Favre , Franca Hoffmann

We investigate the dynamical stability of the holographic system with two order parameters, which exhibits competition and coexistence of condensations. In the linear regime, we have developed the gauge dependent formalism to calculate the…

High Energy Physics - Theory · Physics 2016-01-27 Yiqiang Du , Shan-Quan Lan , Yu Tian , Hongbao Zhang

This paper studies the asymptotic behavior of solutions of the parabolic-parabolic chemotaxis model with logistic-type sources in heterogeneous bounded domains: \begin{equation*} \label{u-v-eq00} \begin{cases} u_t=\Delta u-\chi\nabla\cdot…

Analysis of PDEs · Mathematics 2026-04-14 Tahir Bachar Issa