How linear can a non-linear hyperbolic IFS be?

Fuente: arXiv
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Auteurs principaux: Algom, Amir, Ovadia, Snir Ben, Hertz, Federico Rodriguez, Shannon, Mario
Format: Preprint
Publié: 2024
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author Algom, Amir
Ovadia, Snir Ben
Hertz, Federico Rodriguez
Shannon, Mario
author_facet Algom, Amir
Ovadia, Snir Ben
Hertz, Federico Rodriguez
Shannon, Mario
contents Motivated by a question of M. Hochman, we construct examples of hyperbolic IFSs $Φ$ on $[0,1]$ where linear and non-linear behaviour coexist. Namely, for every $2\leq r \leq \infty$ we exhibit the existence of a $C^r$-smooth IFS such that $f'\equiv c(Φ)$ on the attractor and $f''\equiv 0$ for every $f \in Φ$, yet $Φ$ is not $C^t$-smooth for any $t>r$, nor $C^r$-conjugate to self-similar. We provide a complete classification of these systems. Furthermore, when $r>1$, we give a necessary and sufficient Livsic-like matching condition for a self-conformal $C^r$-smooth IFS to be conjugated to one of these systems having $f''=0$ on the attractor, for every $f\in Φ$. We also show that this condition fails to ensure the existence of a $C^1$-conjugacy in mere $C^1$-regularity.
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id arxiv_https___arxiv_org_abs_2410_22145
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle How linear can a non-linear hyperbolic IFS be?
Algom, Amir
Ovadia, Snir Ben
Hertz, Federico Rodriguez
Shannon, Mario
Dynamical Systems
Motivated by a question of M. Hochman, we construct examples of hyperbolic IFSs $Φ$ on $[0,1]$ where linear and non-linear behaviour coexist. Namely, for every $2\leq r \leq \infty$ we exhibit the existence of a $C^r$-smooth IFS such that $f'\equiv c(Φ)$ on the attractor and $f''\equiv 0$ for every $f \in Φ$, yet $Φ$ is not $C^t$-smooth for any $t>r$, nor $C^r$-conjugate to self-similar. We provide a complete classification of these systems. Furthermore, when $r>1$, we give a necessary and sufficient Livsic-like matching condition for a self-conformal $C^r$-smooth IFS to be conjugated to one of these systems having $f''=0$ on the attractor, for every $f\in Φ$. We also show that this condition fails to ensure the existence of a $C^1$-conjugacy in mere $C^1$-regularity.
title How linear can a non-linear hyperbolic IFS be?
topic Dynamical Systems
url https://arxiv.org/abs/2410.22145