English

Entire maps with rational preperiodic points and multipliers

Dynamical Systems 2025-08-13 v2

Abstract

Given a number field KC\mathbb{K} \subset \mathbb{C} that is not contained in R\mathbb{R}, we prove the existence of a dense set of entire maps f ⁣:CCf \colon \mathbb{C} \rightarrow \mathbb{C} whose preperiodic points and multipliers all lie in K\mathbb{K}. This contrasts with the case of rational maps. In addition, we show that there exists an escaping quadratic-like map that is not conjugate to an affine escaping quadratic-like map and whose multipliers all lie in Q\mathbb{Q}.

Keywords

Cite

@article{arxiv.2304.13674,
  title  = {Entire maps with rational preperiodic points and multipliers},
  author = {Xavier Buff and Igors Gorbovickis and Valentin Huguin},
  journal= {arXiv preprint arXiv:2304.13674},
  year   = {2025}
}

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21 pages