Advances in Difference Equations
Volume 2008 (2008), Article ID 692713, 15 pages
Research Article

Almost Periodic Solutions of Nonlinear Discrete Volterra Equations with Unbounded Delay

Sung Kyu Choi and Namjip Koo

Department of Mathematics, Chungnam National University, Daejeon 305-764, South Korea

Received 30 June 2008; Revised 18 September 2008; Accepted 14 October 2008

Academic Editor: Mariella Cecchi

Copyright © 2008 Sung Kyu Choi and Namjip Koo. 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.


We study the existence of almost periodic solutions for nonlinear discrete Volterra equations with unbounded delay, as a discrete analogue of the results for integro-differential equations by Y. Hamaya (1993).