Non-bulging Fatou components for transcendental skew-products

Fuente: arXiv
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Main Authors: Potthink, Tom, Raissy, Jasmin
Format: Preprint
Published: 2026
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author Potthink, Tom
Raissy, Jasmin
author_facet Potthink, Tom
Raissy, Jasmin
contents In this paper, we investigate the bulging of escaping or oscillating Fatou components on invariant fibers for general skew-products, with a focus on the dependence on the perturbation. We show that any orbitally unbounded component is non-bulging for an appropriate choice of perturbation, whereas sufficiently well-behaved perturbations can render it bulging when the fiber is attracting. Our results highlight that bulging is influenced by more than just the dynamics on the fiber and in the one-dimensional coordinate, contrasting sharply with established results for non-escaping Fatou components.
format Preprint
id arxiv_https___arxiv_org_abs_2603_26202
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Non-bulging Fatou components for transcendental skew-products
Potthink, Tom
Raissy, Jasmin
Dynamical Systems
Primary 37F80, Secondary 30D05, 32H50, 37F10
In this paper, we investigate the bulging of escaping or oscillating Fatou components on invariant fibers for general skew-products, with a focus on the dependence on the perturbation. We show that any orbitally unbounded component is non-bulging for an appropriate choice of perturbation, whereas sufficiently well-behaved perturbations can render it bulging when the fiber is attracting. Our results highlight that bulging is influenced by more than just the dynamics on the fiber and in the one-dimensional coordinate, contrasting sharply with established results for non-escaping Fatou components.
title Non-bulging Fatou components for transcendental skew-products
topic Dynamical Systems
Primary 37F80, Secondary 30D05, 32H50, 37F10
url https://arxiv.org/abs/2603.26202