Portraits of quadratic rational maps with a small critical cycle

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Název: Portraits of quadratic rational maps with a small critical cycle
Autoři: Tyler Dunaisky, David Krumm
Zdroj: Journal of Number Theory. 275:135-159
Publication Status: Preprint
Informace o vydavateli: Elsevier BV, 2025.
Rok vydání: 2025
Témata: Mathematics - Number Theory, FOS: Mathematics, Dynamical Systems (math.DS), Number Theory (math.NT), Mathematics - Dynamical Systems, 37P05, 11G30
Popis: Motivated by a uniform boundedness conjecture of Morton and Silverman, we study the graphs of pre-periodic points for maps in three families of dynamical systems, namely the collections of rational functions of degree two having a periodic critical point of period $n$, where $n\in\{2,3,4\}$. In particular, we provide a conjecturally complete list of possible graphs of rational pre-periodic points in the case $n=4$, analogous to well-known work of Poonen for $n=1$, and we strengthen earlier results of Canci and Vishkautsan for $n\in\{2,3\}$. In addition, we address the problem of determining the representability of a given graph in our list by infinitely many distinct linear conjugacy classes of maps.
Druh dokumentu: Article
Jazyk: English
ISSN: 0022-314X
DOI: 10.1016/j.jnt.2024.12.008
DOI: 10.48550/arxiv.2404.00731
Přístupová URL adresa: http://arxiv.org/abs/2404.00731
Rights: Elsevier TDM
arXiv Non-Exclusive Distribution
Přístupové číslo: edsair.doi.dedup.....bf1b5efb5ee01018b1e8046a490e239b
Databáze: OpenAIRE
Popis
Abstrakt:Motivated by a uniform boundedness conjecture of Morton and Silverman, we study the graphs of pre-periodic points for maps in three families of dynamical systems, namely the collections of rational functions of degree two having a periodic critical point of period $n$, where $n\in\{2,3,4\}$. In particular, we provide a conjecturally complete list of possible graphs of rational pre-periodic points in the case $n=4$, analogous to well-known work of Poonen for $n=1$, and we strengthen earlier results of Canci and Vishkautsan for $n\in\{2,3\}$. In addition, we address the problem of determining the representability of a given graph in our list by infinitely many distinct linear conjugacy classes of maps.
ISSN:0022314X
DOI:10.1016/j.jnt.2024.12.008