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In this paper, we discussed an infinitely distributed delayed viral infection model with nonlinear immune response and general incidence rate. We proved the existence and uniqueness of the equilibria. By using the Lyapunov functional and…

动力系统 · 数学 2018-02-13 Eric Ávila-Vales , Abraham Canul-Pech , Erika Rivero Esquivel

We consider a SICA model for HIV transmission on time scales. We prove permanence of solutions and we derive sufficient conditions for the existence and uniform asymptotic stability of a unique positive almost periodic solution of the…

综合数学 · 数学 2024-11-14 Zahra Belarbi , Benaoumeur Bayour , Delfim F. M. Torres

We consider a spatially-heterogeneous generalization of a well-established model for the dynamics of the Human Immunodeficiency Virus-type 1 (HIV) within a susceptible host. The model consists of a nonlinear system of three coupled…

偏微分方程分析 · 数学 2016-04-18 Stephen Pankavich , Christian Parkinson

We analyse the asymptotic behaviour of integro-differential equations modelling $N$ populations in interaction, all structured by different traits. Interactions are modelled by non-local terms involving linear combinations of the total…

种群与进化 · 定量生物学 2017-04-17 Camille Pouchol , Emmanuel Trélat

A diffusive Lotka-Volterra competition model is considered for the combined effect of spatial dispersal and spatial variations of resource on the population persistence and exclusion. First it is shown that in a two-species system in which…

偏微分方程分析 · 数学 2020-07-21 Wenjie Ni , Junping Shi , Mingxin Wang

In this article, we introduce Lyapunov-type results to investigate the stability of the trivial solution of a Stieltjes dynamical system. We utilize prolongation results to establish the global existence of the maximal solution. Using…

经典分析与常微分方程 · 数学 2024-09-06 Lamiae Maia , Noha El Khattabi , Marlène Frigon

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…

最优化与控制 · 数学 2014-03-25 Iasson Karafyllis , Markos Papageorgiou

We consider a model of antiviral immune response proposed in the works of G.I. Marchuk. The model is described by a system of delay differential equations. The asymptotic stability of a stationary solution to the system corresponding to a…

偏微分方程分析 · 数学 2023-01-02 M. A. Skvortsova

In this paper we consider an SIRS epidemic model under a general assumption of density-dependent mortality. We prove the global stability of the disease-free equilibrium and propose a Lyapunov function that allows to demonstrate the global…

动力系统 · 数学 2018-12-31 Alberto d'Onofrio , Piero Manfredi , Ernesto Salinelli

The aim of this paper is to study the dynamics of a reaction--diffusion SIS (susceptible-infectious-susceptible) epidemic model with a nonlinear incidence rate describing the transmission of a communicable disease between individuals. We…

偏微分方程分析 · 数学 2020-11-12 Lamia Djebara , Redouane Douaifia , Salem Abdelmalek , Samir Bendoukha

In this paper, a mathematical analysis of the global dynamics of a viral infection model in vivo is carried out. We study the dynamics of a hepatitis C virus (HCV) model, under therapy, that considers both extracellular and intracellular…

种群与进化 · 定量生物学 2020-11-13 Alexis Nangue , Alan D. Rendall , Brice Kammegne Tcheugam , Patrick Steve Kamdem Simo

The main result of the paper is a global asymptotic stability result for solutions to the Lifschitz-Slyozov-Wagner (LSW) system of equations. This extends some local asymptotic stability results of Niethammer-Vel\'{a}zquez (2006). The…

偏微分方程分析 · 数学 2020-01-08 Joseph G. Conlon , Michael Dabkowski

An investigation was conducted to study the robustness of the results obtained from the cellular automata model which describes the spread of the HIV infection within lymphoid tissues [R. M. Zorzenon dos Santos and S. Coutinho, Phys. Rev.…

生物物理 · 物理学 2008-07-21 P. H. Figueirêdo , S. Coutinho , R. M. Zorzenon dos Santos

In this paper we investigate some stochastic models for tumor-immune systems. To describe these models, we used a Wiener process, as the noise has a stabilization effect. Their dynamics are studied in terms of stochastic stability in the…

动力系统 · 数学 2009-09-09 O. Chis , A. Sandru , D. Opris

We investigate an infection-age structured competitive epidemiological model involving multiple strains. While classical results establish competitive exclusion when a unique maximal basic reproduction number exists, we provide here a…

偏微分方程分析 · 数学 2026-04-01 Simon Girel , Quentin Richard

We have developed a mathematical model for in-host virus dynamics that includes spatial chemotaxis and diffusion across a two dimensional surface representing the vaginal or rectal epithelium at primary HIV infection. A linear stability…

定量方法 · 定量生物学 2016-03-07 Ognjen Stancevic , Christopher Angstmann , John M. Murray , Bruce I. Henry

An epidemic model with distributed time delay is derived to describe the dynamics of infectious diseases with varying immunity. It is shown that solutions are always positive, and the model has at most two steady states: disease-free and…

混沌动力学 · 物理学 2012-09-21 K. B. Blyuss , Y. N. Kyrychko

We construct a seven-component model of the in-host dynamics of the Human Immunodeficiency Virus Type-1 (i.e, HIV) that accounts for latent infection and the propensity of viral mutation. A dynamical analysis is conducted and a theorem is…

种群与进化 · 定量生物学 2016-04-18 Stephen Pankavich , Deborah Shutt

A delayed model describing the dynamics of HIV (Human Immunodeficiency Virus) with CTL (Cytotoxic T Lymphocytes) immune response is investigated. The model includes four nonlinear differential equations describing the evolution of…

最优化与控制 · 数学 2018-06-13 Karam Allali , Sanaa Harroudi , Delfim F. M. Torres

We consider SIR and SIRS models with differential mortality. Global stability of equilibria is established by using Lyapunov's method

种群与进化 · 定量生物学 2011-12-13 Phillipe Adda , Derdei Bichara