Oscillation of delay difference equations with finite non-monotone arguments

摘要

In this paper, the oscillation of difference equations with multiple non-monotone delay argumentsDelta x(t) + Sigma(m)(i=1)p(i)(t)x(tau(i)(t)) = 0, t is an element of Nis studied. Three criteria of these equations are obtained for oscillation. And examples are given to show the meanings of the theorems.