Arithmetic dynamics of a discrete Painlevé equation

Fuente: arXiv
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Main Authors: Joshi, Nalini, Roffelsen, Pieter
Format: Preprint
Published: 2025
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_version_ 1866918291315884032
author Joshi, Nalini
Roffelsen, Pieter
author_facet Joshi, Nalini
Roffelsen, Pieter
contents We consider the orbits of a discrete Painlevé equation over finite fields and show that the number of points in such orbits satisfy the Hasse bound. The orbits turn out to lie on algebraic curves, whose defining polynomials are given explicitly. Moreover, these curves are shown to have genus less than or equal to one, which contrasts sharply with the case of discrete Painlevé equations over $\mathbb{C}$, whose generic solutions are believed to be more transcendental than elliptic functions.
format Preprint
id arxiv_https___arxiv_org_abs_2508_18578
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Arithmetic dynamics of a discrete Painlevé equation
Joshi, Nalini
Roffelsen, Pieter
Exactly Solvable and Integrable Systems
Dynamical Systems
11G20, 33E17, 37P05, 39A13
We consider the orbits of a discrete Painlevé equation over finite fields and show that the number of points in such orbits satisfy the Hasse bound. The orbits turn out to lie on algebraic curves, whose defining polynomials are given explicitly. Moreover, these curves are shown to have genus less than or equal to one, which contrasts sharply with the case of discrete Painlevé equations over $\mathbb{C}$, whose generic solutions are believed to be more transcendental than elliptic functions.
title Arithmetic dynamics of a discrete Painlevé equation
topic Exactly Solvable and Integrable Systems
Dynamical Systems
11G20, 33E17, 37P05, 39A13
url https://arxiv.org/abs/2508.18578