Uniform unlikely intersections for unicritical polynomials

Fix $d\geq2$, and consider the family $f_{t}(z)=z^{d}+t$ of polynomials parameterized by $t\in\mathbb{C}$. In this article, we will show that there exists a constant $C(d)$ such that for any $a,b\in\mathbb{C}$ with $a^{d}\neq b^{d}$, the number of $t\in\mathbb{C}$ such that $a$ and $b$ are both preperiodic for $f_{t}$ is at most $C(d)$.

Authors

Publication Details

Journal
Épijournal de Géométrie Algébrique
Published
2026-09-09
DOI
https://doi.org/10.46298/epiga.2026.10958
Primary Topic
Meromorphic and Entire Functions
Type
article
Field-Weighted Citation Impact
0.00

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article

Uniform unlikely intersections for unicritical polynomials

Hang Fu
Épijournal de Géométrie Algébrique
Meromorphic and Entire Functions
article

Uniform unlikely intersections for unicritical polynomials

Hang Fu
article en

Abstract

Fix $d\geq2$, and consider the family $f_{t}(z)=z^{d}+t$ of polynomials parameterized by $t\in\mathbb{C}$. In this article, we will show that there exists a constant $C(d)$ such that for any $a,b\in\mathbb{C}$ with $a^{d}\neq b^{d}$, the number of $t\in\mathbb{C}$ such that $a$ and $b$ are both preperiodic for $f_{t}$ is at most $C(d)$.

Épijournal de Géométrie AlgébriqueVol. Volume 10
National Taiwan Normal University
Openalex Percentile: Top 100%
Meromorphic and Entire Functions
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