International Journal of Mathematics and Mathematical Sciences
Volume 8 (1985), Issue 2, Pages 403-406
doi:10.1155/S0161171285000424
  
     
          
          On the order of exponential growth of the solution of the linear difference equation with periodic coefficient in Banach space
          
            H.Attia Hussein
          
          Department of Mathematics, Faculty of Science, Alexandria University, Alexandria, Egypt
          
          Abstract
An equation of the form y−A(t)y=f(t) is considered, where Δy=y(t+δ)−y(t)δ, and the necessary and sufficient criteria for the exponential growth of the solution of this equation is obtained.