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In this article, we shall prove the following two basic results of arithmetic dynamics. Let ƒ: P1(K) → P1(K) be a rational function of degree 𝑑 > 1. Discovered during the research, there are different results shown with the different definitions of K. If K is an algebraically closed field of characteristic 0, then #Fix(ƒn) = 𝑑n + 0(1). If K is a number field, then there are only finitely many preperiodic points of ƒ.
Xin Zheng
"Dynamics of rational functions over different fields", Proc. SPIE 12163, International Conference on Statistics, Applied Mathematics, and Computing Science (CSAMCS 2021), 121633D (22 April 2022); https://doi.org/10.1117/12.2628212
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Xin Zheng, "Dynamics of rational functions over different fields," Proc. SPIE 12163, International Conference on Statistics, Applied Mathematics, and Computing Science (CSAMCS 2021), 121633D (22 April 2022); https://doi.org/10.1117/12.2628212