Results 51 to 60 of about 10,432 (131)

New existence and exponential stability results for periodic solutions in recurrent neural networks with generalized piecewise constant delay via coincidence degree theory

open access: yesMathematical Modelling and Analysis
The present work investigates recurrent neural systems incorporating generalized piecewise constant delay, with particular emphasis on establishing periodic behaviors and verifying their exponential convergence on a global scale. The existence of periodic solutions is established via Mawhin’s coincidence degree in combination with sharp a priori ...
openaire   +1 more source

Periodic solutions for a food chain system with Monod-Haldane functional response on time scales

open access: yesElectronic Journal of Differential Equations, 2014
In this article, we study a three species food chain model on time scales, with Monod-Haldane functional response and time delay. With the help of coincidence degree theory, we establish the existence of periodic solutions.
Kejun Zhuang
doaj  

Existence and attractivity of periodic solutions to Cohen-Grossberg neural network with distributed delays

open access: yesElectronic Journal of Differential Equations, 2005
We study the existence and exponential attractivity of periodic solutions to Cohen-Grossberg neural network with distributed delays. Our results are obtained by applying the continuation theorem of coincidence degree theory and a general Halanay ...
Yongkun Li, Lifei Zhu
doaj  

Positive periodic solutions for a predator-prey model with time delays and impulsive effect

open access: yesElectronic Journal of Differential Equations, 2008
In this article, a two-species predator-prey model with time delays and impulsive effect is investigated. By using Mawhin's continuation theorem of coincidence degree theory, sufficient conditions are obtained for the existence of positive periodic ...
Yongkun Li, Shan Gao
doaj  

Solvability of fractional-order multi-point boundary-value problems at resonance on the half-line

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we study a fractional differential equation. By constructing two special Banach spaces and establishing an appropriate compactness criterion, we present some existence results about the boundary-value problem at resonance via Mawhin's
Yi Chen, Zhanmei Lv
doaj  

Solvability of multi-point value problems with integral condition at resonance

open access: yesInternational Journal of Analysis and Applications, 2018
In this paper, we study a boundary value problem at resonance with a multi-integral boundary conditions. By constructing suitable operators, we establish an existence theorem upon the coincidence degree theory of Mawhin.
Rabah Khaldi, Mohammed Kouidri
doaj   +2 more sources

Solvability of periodic boundary-value problems for second-order nonlinear differential equation involving fractional derivatives

open access: yesElectronic Journal of Differential Equations, 2014
This article concerns the existence of solutions to periodic boundary-value problems for second-order nonlinear differential equation involving fractional derivatives.
Taiyong Chen, Wenbin Liu
doaj  

Antiperiodic solutions for nth-order functional differential equations with infinite delay

open access: yesElectronic Journal of Differential Equations, 2016
In this work, we establish the existence and uniqueness of antiperiodic solution for a class of nth-order functional differential equations with infinite delay. The main tool in our study is the coincidence degree theory.
Suzete M. Afonso, Andre L. Furtado
doaj  

Emulation of coherent absorption of Fock-state quantum light in a programmable linear photonic circuit. [PDF]

open access: yesNat Commun
Krishna G   +7 more
europepmc   +1 more source

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