Abstract
To prove existence and uniqueness (or just existence) of a bounded solution to nonlinear differential equations of higher order, we employ the contraction mapping principle and the Tikhonov Fixed Point Theorem. A quantitative estimate of a nonlinear perturbation preserving basic features of behavior of the corresponding linear equation (asymptotic stability or exponential dichotomy) is important when we pass to a nonlinear equation.
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Original Russian Text Copyright © 2016 Perov A.I. and Kostrub I.D.
Voronezh. Translated from Sibirskiĭ Matematicheskiĭ Zhurnal, Vol. 57, No. 4, pp. 830–849, July–August, 2016; DOI: 10.17377/smzh.2016.57.408. Original article submitted September 22, 2015.
The authors were supported by the Russian Foundation for Basic Research (Grant 16–01–00197).
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Perov, A.I., Kostrub, I.D. On bounded solutions to weakly nonlinear vector-matrix differential equations of order n . Sib Math J 57, 650–665 (2016). https://doi.org/10.1134/S003744661604008X
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DOI: https://doi.org/10.1134/S003744661604008X