Abstract
Consider the delay difference equation y(t) − y(t−τ) + p(t)H(y(t − θ)) = ƒ(t), t⩽0, where τ > 0, σ > 0, and p ϵ C( R +, R +), f ϵ C( R +, R), H ϵ C( R, R). Some oscillation criteria for this equation are obtained.
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