Oscillation of delay difference equations with finite non-monotone arguments. (English) Zbl 1482.39010
Summary: In this paper, the oscillation of difference equations with multiple non-monotone delay arguments
\[
\Delta x(t)+ \sum\limits_{i=1}^mp_i(t)x (\tau_i(t))=0,\ t \in\mathbb{N}
\]
is studied. Three criteria of these equations are obtained for oscillation. And examples are given to show the meanings of the theorems.
MSC:
39A21 | Oscillation theory for difference equations |