Discrete Dynamics in Nature and Society
Volume 2006 (2006), Article ID 78145, 12 pages
doi:10.1155/DDNS/2006/78145
Two periodic solutions of neutral difference equations modelling physiological processes
Jun Wu1
and Yicheng Liu2
1College of Mathematics and Computer Science, Changsha University of Science Technology, Changsha 410076, China
2Department of Mathematics and System Science, College of Science, National University of Defense Technology, Changsha 410073, China
Abstract
We establish existence, multiplicity, and nonexistence of periodic solutions for a class of first-order neutral difference equations modelling physiological processes and conditions. Our approach is based on a fixed point theorem in cones as well as some analysis techniques.