Abstract
We study the local dynamics of one class of nonlinear difference equations which is important for applications. Using perturbation theory methods, we construct sets of singularly perturbed differential-difference equations that are close (in a sense) to initial difference equations. For the problem on the stability of the zero equilibrium state and for certain infinite-dimensional critical cases, we propose a method that allows us to construct analogs of normal forms. We mean special nonlinear boundary value problems without small parameters, whose nonlocal dynamics describes the structure of solutions to initial equations in a small neighborhood of the equilibrium state. We show that dynamic properties of difference and close to them differential-difference equations considerably differ.
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Original Russian Text © I.S. Kashchenko, S.A. Kashchenko, 2018, published in Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, 2018, No. 9, pp. 29–41.
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Kashchenko, I.S., Kashchenko, S.A. Analysis of Local Dynamics of Difference and Close to Them Differential-Difference Equations. Russ Math. 62, 24–34 (2018). https://doi.org/10.3103/S1066369X18090049
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DOI: https://doi.org/10.3103/S1066369X18090049