作者: Shiping Lu , Lijuan Chen
DOI: 10.1016/J.JMAA.2011.10.022
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摘要: Abstract In this paper, the authors investigate some new properties of nonlinear difference operator in first, which is associated with neutral functional differential equations. Then, by using these properties, problem existence periodic solutions for system D 1 ( φ ) = 0 − B τ h studied. The interesting thing that solution to allowed be not differentiable.