Topological conjugacies and behavior at infinity

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March 2014, 13(2): 687-701. doi: 10.3934/cpaa.2014.13.687

Topological conjugacies and behavior at infinity

1.	Departamento de Matemática, Instituto Superior Técnico, UTL, 1049-001 Lisboa
2.	Departamento de Matemática, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa

Received March 2013 Revised June 2013 Published October 2013

Abstract
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We obtain a version of the Grobman--Hartman theorem in Banach spaces for perturbations of a nonuniform exponential contraction, both for discrete and continuous time. More precisely, we consider the general case of an exponential contraction with an arbitrary nonuniform part and obtained from a nonautonomous dynamics, and we establish the existence of Hölder continuous conjugacies between an exponential contraction and any sufficiently small perturbation. As a nontrivial application, we describe the asymptotic behavior of the topological conjugacies in terms of the perturbations: namely, we show that for perturbations growing in a certain controlled manner the conjugacies approach zero at infinity and that when the perturbations decay exponentially at infinity the conjugacies have the same exponential behavior.

Keywords: topological conjugacies., Exponential contractions.

Mathematics Subject Classification: Primary: 37D10, 37D2.

Citation: Luis Barreira, Claudia Valls. Topological conjugacies and behavior at infinity. Communications on Pure & Applied Analysis, 2014, 13 (2) : 687-701. doi: 10.3934/cpaa.2014.13.687

References:

[1]	L. Barreira and C. Valls, Stable manifolds for nonautonomous equations without exponential dichotomy,, J. Differential Equations, 221 (2006), 58. Google Scholar
[2]	L. Barreira and C. Valls, Nonuniform exponential dichotomies and Lyapunov regularity,, J. Dynam. Differential Equations, 19 (2007), 215. Google Scholar
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[4]	G. Belickiĭ, Equivalence and normal forms of germs of smooth mappings,, Russian Math. Surveys, 33 (1978), 107. Google Scholar
[5]	D. Grobman, Homeomorphism of systems of differential equations,, Dokl. Akad. Nauk SSSR, 128 (1959), 880. Google Scholar
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[7]	P. Hartman, A lemma in the theory of structural stability of differential equations,, Proc. Amer. Math. Soc., 11 (1960), 610. Google Scholar
[8]	P. Hartman, On the local linearization of differential equations,, Proc. Amer. Math. Soc., 14 (1963), 568. Google Scholar
[9]	P. McSwiggen, A geometric characterization of smooth linearizability,, Michigan Math. J., 43 (1996), 321. Google Scholar
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[12]	C. Pugh, On a theorem of P. Hartman,, Amer. J. Math., 91 (1969), 363. Google Scholar
[13]	G. Sell, Smooth linearization near a fixed point,, Amer. J. Math., 107 (1985), 1035. Google Scholar
[14]	S. Sternberg, Local contractions and a theorem of Poincaré,, Amer. J. Math., 79 (1957), 809. Google Scholar
[15]	S. Sternberg, On the structure of local homeomorphisms of euclidean $n$-space. II.,, Amer. J. Math., 80 (1958), 623. Google Scholar

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References:

[1]	L. Barreira and C. Valls, Stable manifolds for nonautonomous equations without exponential dichotomy,, J. Differential Equations, 221 (2006), 58. Google Scholar
[2]	L. Barreira and C. Valls, Nonuniform exponential dichotomies and Lyapunov regularity,, J. Dynam. Differential Equations, 19 (2007), 215. Google Scholar
[3]	G. Belickiĭ, Functional equations, and conjugacy of local diffeomorphisms of finite smoothness class,, Functional Anal. Appl., 7 (1973), 268. Google Scholar
[4]	G. Belickiĭ, Equivalence and normal forms of germs of smooth mappings,, Russian Math. Surveys, 33 (1978), 107. Google Scholar
[5]	D. Grobman, Homeomorphism of systems of differential equations,, Dokl. Akad. Nauk SSSR, 128 (1959), 880. Google Scholar
[6]	D. Grobman, Topological classification of neighborhoods of a singularity in $n$-space,, Mat. Sb. (N.S.), 56 (1962), 77. Google Scholar
[7]	P. Hartman, A lemma in the theory of structural stability of differential equations,, Proc. Amer. Math. Soc., 11 (1960), 610. Google Scholar
[8]	P. Hartman, On the local linearization of differential equations,, Proc. Amer. Math. Soc., 14 (1963), 568. Google Scholar
[9]	P. McSwiggen, A geometric characterization of smooth linearizability,, Michigan Math. J., 43 (1996), 321. Google Scholar
[10]	J. Palis, On the local structure of hyperbolic points in Banach spaces,, An. Acad. Brasil. Ci., 40 (1968), 263. Google Scholar
[11]	K. Palmer, A generalization of Hartman's linearization theorem,, J. Math. Anal. Appl., 41 (1973), 753. Google Scholar
[12]	C. Pugh, On a theorem of P. Hartman,, Amer. J. Math., 91 (1969), 363. Google Scholar
[13]	G. Sell, Smooth linearization near a fixed point,, Amer. J. Math., 107 (1985), 1035. Google Scholar
[14]	S. Sternberg, Local contractions and a theorem of Poincaré,, Amer. J. Math., 79 (1957), 809. Google Scholar
[15]	S. Sternberg, On the structure of local homeomorphisms of euclidean $n$-space. II.,, Amer. J. Math., 80 (1958), 623. Google Scholar

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