p‐adic interpolation of iterates

p‐adic interpolation of iterates
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迭代的 p 进插值

DOI:
10.1112/blms/bdu010
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发表时间:
2013
影响因子:
0.9
通讯作者:
B. Poonen
B. Poonen
中科院分区:
数学3区
文献类型:
--
作者:
B. Poonen

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推广Bell和Bell、吉奥卡和Tucker的工作,我们证明了对于闭单位多圆盘上的p进解析自映射f,如果f(x)−x的每个系数的赋值都大于p1/(p−1),则f的迭代可以p进插值;也就是说,存在一个在x和n上都解析的函数g(x,n),使得g(x,n)=fn(x),当n∈Z <$0时。
Extending work of Bell and of Bell, Ghioca, and Tucker, we prove that for a p ‐adic analytic self‐map f on a closed unit polydisk, if every coefficient of f(x)−x has valuation greater than that of p1/(p−1) , then the iterates of f can be p ‐adically interpolated; that is, there exists a function g(x,n) analytic in both x and n such that g(x,n)=fn(x) whenever n∈Z⩾0 .