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Periodic solutions of nonlinear second-order difference equations. (English) Zbl 1098.39004
The existence of numerous particular cases solutions to the delay difference equation of the form \(y(t+2)+by(t+1)+cy(t)=f(y(t))\) \(t=0,1, 2,3,\dots\), where \(c\neq 0\) and \(uf(u)>0\) whenever \(|u|\geq\beta>0\) and \(b\) and \(c\) are real constants and \(f\) is a realvalued, continuous function is considered.

MSC:
39A11 Stability of difference equations (MSC2000)
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