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Bachelor thesis

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cc-by-nc-nd (c) Laia Marcè Martı́n, 2025
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/221825

The escaping set

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Abstract

The aim of this project is to understand the behaviour of holomorphic functions of one complex variable under iteration, focusing on polynomials and transcendental entire functions. Our study centres on the points whose orbits tend to infinity, which form the escaping set, a fundamental object in complex dynamics. The escaping set provides insight into the global behaviour of iterates and their relationship with the Julia and Fatou sets, which are also important sets in complex dynamics. To achieve this, we begin by establishing a foundational background in dynamical systems. We then proceed with a separate study to characterize the escaping set for both polynomials and transcendental entire functions, using the previous dynamical results as tools to analyse their structure and properties. In both cases, the most remarkable result is that the escaping set is nonempty, proving the existence of points whose orbits eventually escape to infinity under iteration.

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Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2025, Director: Gustavo Rodrigues Ferreira i Núria Fagella Rabionet

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Citation

MARCÈ MARTÍN, Laia. The escaping set. [consulted: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/221825

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