Advances in Difference Equations
Volume 2009 (2009), Article ID 380568, 19 pages
doi:10.1155/2009/380568

Existence of periodic and almost periodic solutions of abstract retarded functional difference equations in phase spaces

Abstract

The existence of periodic, almost periodic, and asymptotically almost periodic of periodic and almost periodic of abstract retarded functional difference equations in phase spaces is obtained by using stability properties of a bounded solution.