Advances in Difference Equations
Volume 2010 (2010), Article ID 606149, 15 pages
doi:10.1155/2010/606149
Frequent oscillatory behavior of delay partial difference equations with positive and negative coefficients
Li Hua Xu
and Jun Yang
College of Science, Yanshan University, Qinhuangdao, Hebei 066004, China
Abstract
This paper is concerned with a class of nonlinear delay partial difference equations with positive and negative coefficients, which also contains forcing terms. By making use of frequency measures, some new oscillatory criteria are established.