摘要：In this article, we discuss the existence of periodic solutions for the higher-order difference equation x ( n + k ) = g ( x ( n ) ) − f ( n , x ( n − τ ( n ) ) . We show the existence of periodic solutions by using Schauder's fixed point theorem, and illustrate three examples. MSC 2010: 39A10; 39A12.
关键词：functional difference equation ; periodic solution ; fixed point theorem
