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Oscillation of nonlinear three-dimensional difference systems with delays. (English) Zbl 1224.39019
Summary: The three-dimensional nonlinear difference system \( \Delta x_n=a_n f(y_{n-l})\), \( \Delta y_n=b_n g(z_{n-m})\), \(\Delta z_n=\delta c_n h(x_{n-k})\) is investigated. Sufficient conditions under which the system is oscillatory or almost oscillatory are presented.

MSC:
39A21 Oscillation theory for difference equations
39A10 Additive difference equations
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