Geodesic
On Asymptotic Properties of Solutions to Weakly Nonlinear Systems in the Neighborhood of a Singular Point
Matematičeskie zametki, Tome 75 (2004) no. 5, pp. 683-692

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In this paper, we consider the class of so-called weakly hyperbolic linear systems, which includes correct and hyperbolic (exponentially-dichotomous) systems. We prove new results generalizing related classical theorems on the conditional stability of solutions. We establish the existence of stable manifolds consisting of points corresponding to the solutions of such systems with negative Lyapunov exponents. We study the behavior of solutions starting outside the stable manifold. The technique used in our paper is similar to that in the theory of hyperbolic systems. 
@article{MZM_2004_75_5_a4,
     author = {S. G. Kryzhevich},
     title = {On {Asymptotic} {Properties} of {Solutions} to {Weakly} {Nonlinear} {Systems} in the {Neighborhood} of a {Singular} {Point}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {683--692},
     publisher = {mathdoc},
     volume = {75},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_75_5_a4/}
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S. G. Kryzhevich. On Asymptotic Properties of Solutions to Weakly Nonlinear Systems in the Neighborhood of a Singular Point. Matematičeskie zametki, Tome 75 (2004) no. 5, pp. 683-692. http://geodesic.mathdoc.fr/item/MZM_2004_75_5_a4/