Results 91 to 100 of about 9,017,418 (195)

On the Uniqueness and Dependence of Positive Periodic Solutions for Delay Differential Systems with Feedback Control

International Journal of Mathematics and Mathematical Sciences, 2012
This paper investigates a class of delay differential systems with feedback control. Sufficient conditions are obtained for the existence and uniqueness of the positive periodic solution by utilizing some results from the mixed monotone operator theory ...
Haitao Li, Yansheng Liu
doaj   +1 more source

Positive Periodic Solution for Second-Order Singular Semipositone Differential Equations

, 2020
We study the existence of a positive periodic solution for second-order singular semipositone differential equation by a nonlinear alternative principle of Leray-Schauder.
Xiumei Xing
core  

On computing normalized coprime factorizations of periodic systems [PDF]

, 2010
A numerically reliable state space algorithm is proposed for computing normalized coprime factorizations of periodic descriptor systems. A preprocessing step is used in the algorithm to convert the initial problem for possibly non-causal systems into
Varga, Andras
core  

Existence and global attractivity of the unique positive periodic solution for discrete hematopoiesis model

, 2015
In this paper, a discrete Hematopoiesis model is studied. By using fixed point theorem of decreasing operator, we obtain sufficient conditions for the existence of unique positive periodic solution. Particularly,we give iterative sequence which converges
Yao, Zhijian
core  

Comparing one-shot and multi-shot methods for solving periodic of Riccati differential equations [PDF]

, 2007
- One-shot methods and recently proposed multi-shot methods for computing stabilizing solutions of continuoustime periodic Riccati differential equations are examined and evaluated on two test problems.
Varga, Andreas, Johansson, S., Shiriaev, A.   +2 more
core  

Existence of positive periodic solutions of second-order differential equations with weak singularity

四川大学学报. 自然科学版, 2019
The existence of positive periodic solutions of a class of second-order differential equation is obtained by using the Schauder's fixed point theorem. The main results generalize some recent results.
MIAO Liang-Ying, LIU Xi-Lan, HE Zhi-Qian
doaj  

Robust and minimum norm pole assignment with periodic state feedback [PDF]

, 1998
A computational approach is proposed to solve the minimum norm and/or robust pole assignment problem for linear periodic discrete-time systems. The proposed approach uses a periodic Sylvester equation based parametrization of the periodic pole ...
Varga, A.
core  

Global attractivity of periodic solution in a model of hematopoiesis

, 2002
Sufficient conditions are obtained for the global attractivity of a positive periodic solution for the periodic equation for n > 0, where δ(t), β(t), α(t) are continuous positive periodic function on [0, ∞) with a period ω > 0 and K(s) is a delay ...
Weng, Pei-Xuan
core   +1 more source

Positive almost periodic solutions to integral equations with superlinear perturbations via a new fixed point theorem in cones

Electronic Journal of Differential Equations, 2017
In this article, we establish a new fixed point theorem for nonlinear operators with superlinear perturbations in partially ordered Banach spaces, Then we use the fixed point theorem to prove the existence of positive almost periodic solutions to ...
Jing-Yun Zhao, Hui-Sheng Ding, Gaston M. N'Guerekata   +2 more
doaj  

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

Electronic 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