Results 21 to 30 of about 527 (114)

On the Lyapunov equation in Banach spaces and applications to control problems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 3, Page 155-166, 2002., 2002
By extending the Lyapunov equation A*Q + QA = −P to an arbitrary infinite‐dimensional Banach space, we give stability conditions for a class of linear differential systems. Relationship between stabilizability and exact null‐controllability is established.
Vu Ngoc Phat, Tran Tin Kiet
wiley   +1 more source

Dynamics for a discrete competition and cooperation model of two enterprises with multiple delays and feedback controls

open access: yesOpen Mathematics, 2017
This paper is concerned with a competition and cooperation model of two enterprises with multiple delays and feedback controls. With the aid of the difference inequality theory, we have obtained some sufficient conditions which guarantee the permanence ...
Lu Lin, Lian Yi, Li Chaoling
doaj   +1 more source

Characteristic matrices for linear periodic delay differential equations [PDF]

open access: yes, 2011
Szalai et al. (SIAM J. on Sci. Comp. 28(4), 2006) gave a general construction for characteristic matrices for systems of linear delay-differential equations with periodic coefficients.
Chow S. N., Jan Sieber, Robert Szalai
core   +3 more sources

Investigation of interval stability of linear systems of neutral type of Lyapunov function method

open access: yesInternational Journal of Stochastic Analysis, Volume 15, Issue 1, Page 71-81, 2002., 2002
Systems of differential equations with deviating argument of neutral type [1, 3, 8] are used. The mathematical model takes into account not only the previous moments of time, but also the speed of their change. These equations more adequately describe the dynamics of processes, but their investigation faces significant difficulties.
Denis Ya. Khusainov
wiley   +1 more source

Dynamics of two-species delayed competitive stage-structured model described by differential-difference equations

open access: yesOpen Mathematics, 2019
Overf the last few years, by utilizing Mawhin’s continuation theorem of coincidence degree theory and Lyapunov functional, many scholars have been concerned with the global asymptotical stability of positive periodic solutions for the non-linear ...
Han Sufang   +4 more
doaj   +1 more source

Multi-condition of stability for nonlinear stochastic non-autonomous delay differential equation [PDF]

open access: yes, 2018
A nonlinear stochastic differential equation with the order of nonlinearity higher than one, with several discrete and distributed delays and time varying coefficients is considered.
Shaikhet, Leonid
core   +2 more sources

The method of averaging and functional differential equations with delay

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 26, Issue 8, Page 497-511, 2001., 2001
We present a natural extension of the method of averaging to fast oscillating functional differential equations with delay. Unlike the usual approach where the analysis is kept in an infinite‐dimensional Banach space, our analysis is achieved in ℝn. Our results are formulated in classical mathematics. They are proved within Internal Set Theory which is
Mustapha Lakrib
wiley   +1 more source

Hyperbolicity of linear partial differential equations with delay [PDF]

open access: yes, 2013
Robust hyperbolicity and stability results for linear partial differential equations with delay will be given and, as an application, the effect of small delays to the asymptotic properties of feedback systems will be ...
Bátkai, András
core   +1 more source

On the “freezing” method for nonlinear nonautonomous systems with delay

open access: yesInternational Journal of Stochastic Analysis, Volume 14, Issue 3, Page 283-292, 2001., 2001
Nonlinear nonautonomous differential systems with delaying argument are considered. Explicit conditions for absolute stability are derived. The proposed approach is based on the generalization of the “freezing” method for ordinary differential equations.
Michael I. Gil′
wiley   +1 more source

Analysis of Control Interventions against Malaria in communities with Limited Resources

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
The aim of this paper is to analyse the potential impact of multiple current interventions in communities with limited resources in order to obtain optimal control strategies and provide a basis for future predictions of the most effective control ...
Bakare E.A.   +3 more
doaj   +1 more source

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