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Doctoral Thesis
DOI
https://doi.org/10.11606/T.45.2017.tde-20230727-113113
Document
Author
Full name
André Ribeiro de Resende Alves
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Title in Portuguese
Existência de medidas invariantes absolutamente contínuas para recobrimentos críticos do círculo com combinatória Fibonacci generalizada
Keywords in Portuguese
Atratores
Medida De Lebesgue
Medida E Integração
Sistemas Dinâmicos
Topologia Algébrica
Abstract in Portuguese
Nesse trabalho estudamos as propriedades dinâmicas de recobrimentos críticos do círculo que possuam grau topológico d = 2, derivada de Schwarz negativa e cujo ponto crítico possua ordem 1 < L < 2. Mais precisamente, estamos interessados em condições sobre a combinatória que nos garantam que tais aplicacões possuam medidas invariantes absolutamente contínuas em relação à medida de Lebesgue, que chamamos de medidas acip. Como já foi provado que a combinatória de Fibonacci satisfaz esses requisitos, nos concentramos em uma combinatória que chamaremos de Fibonacci generalizada. Provaremos que para um subconjunto importante dessas aplicações temos Dfsn(cf) tendendo ao infinito, o que é urna condição suficiente para garantir a existência de acips
Title in English
Existence of absolutely continuous measures for critical covering maps of the circle with generalized Fibonacci combinatorics
Abstract in English
We stucly the dynamical properties of critica! covering rnaps of the circle with topological degree d > 2, negative Schwarzian derivativo anel who's critica} point has order 1 < L < 2. We're especially intercsted in combinatorial properties that guarantee the existence of absolutely continuous invariant measures ( acip) for those functions. Since such a result was already proveu for the Fibonacci combinatorics, we concentrate our efforts on a combinatory we will call generalized Fibonacci. For an important subset of such functions, we will prove that Dfsn(cf) tends to infinity, which is a sufficient condition to assurc the existence of acip measures
 
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Publishing Date
2023-07-27
 
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