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arXiv 1702.01976math.NTmath.DS
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多项式动力系统模素数的轨道

Orbits of Polynomial Dynamical Systems Modulo Primes

Mei-Chu Chang, Carlos D'Andrea, Alina Ostafe, Igor E. Shparlinski, Martin Sombra

摘要:

给出了定义在整数上的参数多项式动力系统的约化模素数轨道长度的下界,并对$\mathbb C$上的预周期点集作了适当的假设.应用Baker和DeMarco~(2011)以及Ghioca,Krieger,Nguyen和Ye~(2017)的最新结果,我们得到了参数多项式和初始点的显式族,使得模素数的约简具有长轨道,除了参数的有限个值。这推广了Chang~(2015)提出的一个下界。作为副产品,我们还稍微改进了Silverman~(2008)的结果,并恢复了Akbary和Ghioca~(2009)的结果,作为我们估计的特殊极端情况。

英文摘要:

We present lower bounds for the orbit length of reduction modulo primes of parametric polynomial dynamical systems defined over the integers, under a suitable hypothesis on its set of preperiodic points over $\mathbb C$. Applying recent results of Baker and DeMarco~(2011) and of Ghioca, Krieger, Nguyen and Ye~(2017), we obtain explicit families of parametric polynomials and initial points such that the reductions modulo primes have long orbits, for all but a finite number of values of the parameters. This generalizes a previous lower bound due to Chang~(2015). As a by-product, we also slighly improve a result of Silverman~(2008) and recover a result of Akbary and Ghioca~(2009) as special extreme cases of our estimates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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