On a theorem of Myshkis-Tsalyuk.
Sokhadze, Z. (1995)
Memoirs on Differential Equations and Mathematical Physics
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Sokhadze, Z. (1995)
Memoirs on Differential Equations and Mathematical Physics
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Urszula Foryś, Anna Marciniak-Czochra (2003)
International Journal of Applied Mathematics and Computer Science
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The aim of this paper is to present some approaches to tumour growth modelling using the logistic equation. As the first approach the well-known ordinary differential equation is used to model the EAT in mice. For the same kind of tumour, a logistic equation with time delay is also used. As the second approach, a logistic equation with diffusion is proposed. In this case a delay argument in the reaction term is also considered. Some mathematical properties of the presented models are...
Mihály Pituk, John Ioannis Stavroulakis (2025)
Czechoslovak Mathematical Journal
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A well-known shadowing theorem for ordinary differential equations is generalized to delay differential equations. It is shown that a linear autonomous delay differential equation is shadowable if and only if its characteristic equation has no root on the imaginary axis. The proof is based on the decomposition theory of linear delay differential equations.
Yuan-Ming Wang (2010)
ESAIM: Mathematical Modelling and Numerical Analysis
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This paper is concerned with the asymptotic behavior of the finite difference solutions of a class of nonlinear reaction diffusion equations with time delay. By introducing a pair of coupled upper and lower solutions, an existence result of the solution is given and an attractor of the solution is obtained without monotonicity assumptions on the nonlinear reaction function. This attractor is a sector between two coupled quasi-solutions of the corresponding “steady-state" problem,...
Moussa El-Khalil Kpoumiè, Khalil Ezzinbi, David Békollè (2017)
Nonautonomous Dynamical Systems
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The aim of this work is to establish several results on the existence and regularity of solutions for some nondensely nonautonomous partial functional differential equations with finite delay in a Banach space. We assume that the linear part is not necessarily densely defined and generates an evolution family under the conditions introduced by N. Tanaka.We show the local existence of the mild solutions which may blow up at the finite time. Secondly,we give sufficient conditions ensuring...
Cung The Anh, Le Van Hieu, Dang Thi Phuong Thanh (2014)
Bulletin of the Polish Academy of Sciences. Mathematics
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We prove the existence of a compact connected global attractor for a class of abstract semilinear parabolic equations with infinite delay.
Rezounenko, Alexander V.
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We propose a virus dynamics model with reaction-diffusion and logistic growth terms, intracellular state-dependent delay and a general non-linear infection rate functional response. Classical solutions with Lipschitz in-time initial functions are investigated. This type of solutions is adequate to the discontinuous change of parameters due to, for example, drug administration. The Lyapunov functions approach is used to analyse stability of interior infection equilibria which describe...
Kharatishvili, G., Tadumadze, T., Gorgodze, N. (2000)
Memoirs on Differential Equations and Mathematical Physics
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Sonnenberg, Amnon, Crain, Bradford R. (2005)
Journal of Theoretical Medicine
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Abbes Benaissa, Mostefa Miloudi, Mokhtar Mokhtari (2015)
Commentationes Mathematicae Universitatis Carolinae
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We consider the Bresse system in bounded domain with delay terms in the internal feedbacks and prove the global existence of its solutions in Sobolev spaces by means of semigroup theory under a condition between the weight of the delay terms in the feedbacks and the weight of the terms without delay. Furthermore, we study the asymptotic behavior of solutions using multiplier method.
A. F. Ivanov (1989)
Banach Center Publications
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Abdessalam Baliki, Mouffak Benchohra (2014)
Nonautonomous Dynamical Systems
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In this paper we prove the global existence and attractivity of mild solutions for neutral semilinear evolution equations with state-dependent delay in a Banach space.
J. Džurina (1997)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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Our aim in this paper is to present the relationship between property (B) of the third order equation with delay argument y'''(t) - q(t)y(τ(t)) = 0 and the oscillation of the second order delay equation of the form y''(t) + p(t)y(τ(t)) = 0.