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Open Access

Periodic solutions for a coupled pair of delay difference equations

Advances in Difference Equations20052005:218982

Received: 31 January 2005

Published: 27 September 2005


Based on the fixed-point index theory for a Banach space, positive periodic solutions are found for a system of delay difference equations. By using such results, the existence of nontrivial periodic solutions for delay difference equations with positive and negative terms is also considered.

Authors’ Affiliations

Department of Mathematics, Qingdao Technological University, Shandong, China
Department of Mathematics, Yanbei Normal University, Shanxi, China
Department of Mathematics, National Tsing Hua University, Hsinchu, Taiwan


© Zhang et al. 2005