Journal of Applied Mathematics and Stochastic Analysis
Volume 2006 (2006), Article ID 38769, 13 pages
doi:10.1155/JAMSA/2006/38769
    
    
    Robustness of solutions of linear differential equations with infinite delay
    
    Department of Mathematics and Statistics, Mu'tah University, Mu'tah 61710, Jordan
    
    
    
    Received 22 November 2004; Revised 28 June 2005; Accepted 4 August 2005
    	
    
       
    Copyright © 2006 Anwar A. Al-Badarneh (Al-Nayef) and Rabaa K. Maaitah. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
     
    
    
   
 
Abstract
We use some consequences of the concept of semihyperbolicity of
the solution operator to show robustness of solutions of the
linear delay differential equation x′(t)=Ax(t)+Bx(t−r) with infinite delay with respect to a small nonlinear perturbation.