NEW OSCILLATION CRITERIA FOR H-DIFFERENCE EQUATION WITH OSCILLATORY
PERIODIC COEFFICIENTS
Abstract
In this manuscript new oscillation criteria are given for solutions of
h-order delay difference equation in the form ∆ E n + p n E n − α = 0 .
Here, four cases of p are considered; for α∈N , as
oscillatory periodic sequences with periods 2 α,(2 α+1)
and ( α+1) , and a quickly oscillating sequence such that
p n p n + 1 < 0 . It is well known that coefficient functions
has a very important role in the behavior of the solutions of an
equation. The coefficients sequence p has been considered as
positive sequences in all oscillation criteria so far. But It is
considered as a oscillatory periodic sequences and quickly oscillatory
sequences for the first time in this study. We use a new technique to
prove our results. Also some examples are provided to demonstrate the
effectiveness of the main results.