Results 21 to 30 of about 3,975,149 (297)

An overview of recent developments in computational methods for periodic systems [PDF]

open access: yes, 2007
: At the First IFAC Workshop on Periodic Systems (Como, Italy, 2001), a state of the art survey of computational methods for periodic systems has been presented (Varga and Van Dooren, 2001).
Andras Varga, Varga, Andreas
core   +1 more source

The Periodic Solution of Fractional Oscillation Equation with Periodic Input

open access: yesAdvances in Mathematical Physics, 2013
The periodic solution of fractional oscillation equation with periodic input is considered in this work. The fractional derivative operator is taken as  -∞Dtα, where the initial time is -∞; hence, initial conditions are not needed in the model of the ...
Jun-Sheng Duan
doaj   +1 more source

Dynamic Complexity in a Prey-Predator Model with State-Dependent Impulsive Control Strategy

open access: yesComplexity, 2020
In this paper, an ecological model described by a couple of state-dependent impulsive equations is studied analytically and numerically. The theoretical analysis suggests that there exists a semitrivial periodic solution under some conditions and it is ...
Chuanjun Dai
doaj   +1 more source

Global behavior of a rational difference equation with quadratic term [PDF]

open access: yesMathematica Moravica, 2014
In this paper, we determine the forbidden set, introduce an explicit formula for the solutions and discuss the global behavior of all solutions of the difference equation Xn+1 = aXnXn-1 bXn - CXn-2, n = 0, 1, … where a, b, c are positive real numbers and
Abo-Zeid R.
doaj  

Analytical solutions of a particular Hill's differential system [PDF]

open access: yesINCAS Bulletin, 2019
Consider a second order differential linear periodic equation. This equation is recast as a first-order homogeneous Hill’s system. For this system we obtain analytical solutions in explicit form. The first solution is a periodic function.
Nicolae MARCOV
doaj   +1 more source

Anti-periodic solution for fuzzy differential equations

open access: yes上海师范大学学报. 自然科学版, 2021
In this paper, using differential inclusions’ approach, we obtain existence results of antiperiodic solutions for a class of fuzzy differential equations. An example shows the feasibility of the main results.
ZHU Shumin, WANG Qi
doaj   +1 more source

PERIODIC SOLUTIONS AND SLOW MANIFOLDS [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 2007
After reviewing a number of results from geometric singular perturbation theory, we give an example of a theorem for periodic solutions in a slow manifold. This is illustrated by examples involving the van der Pol-equation and a modified logistic equation.
openaire   +4 more sources

Periodic Solution of the Hematopoiesis Equation

open access: yesAbstract and Applied Analysis, 2013
Wu and Liu (2012) presented some results for the existence and uniqueness of the periodic solutions for the hematopoiesis model. This paper gives a simple approach to find an approximate period of the model.
Ji-Huan He
doaj   +1 more source

Computation of transfer function matrices of periodic systems [PDF]

open access: yes, 2002
We present a numerical approach to evaluate the transfer function matrices of a periodic system corresponding to lifted state-space representations as constant systems.
A. Varga, Varga, Andras
core   +1 more source

A Periodic Systems Toolbox for MATLAB [PDF]

open access: yes, 2005
The recently developed Periodic Systems Toolbox for MATLAB is described. The basic approach to develop this toolbox was to exploit the powerful object manipulation features of MATLAB via flexible andfunctionally rich high level m-functions, while ...
A. Varga, Varga, A.
core   +1 more source

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