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On Stoll’s criterion for the maximality of quadratic arboreal Galois representations
Archiv der Mathematik ( IF 0.6 ) Pub Date : 2021-04-12 , DOI: 10.1007/s00013-021-01609-w
Hua-Chieh Li

We show that for a quadratic polynomial \(f(x)=x^2-c\), where \(c=(8k+2)(8k+3)\) or \(c=(4k+1)(4k+2)+1\) with \(k\in {\mathbb {N}}\cup \{0\}\), the Galois group of the splitting field of each iterate \(f^n\) of f is isomorphic to the automorphism group of a complete binary rooted tree of height n.



中文翻译:

关于二次树状Galois表示的最大值的Stoll准则

我们证明了对于二次多项式\(f(x)= x ^ 2-c \),其中\(c =(8k + 2)(8k + 3)\)\(c =(4k + 1)( 4K + 2)+1 \)\(在{\ mathbb {N}} \杯\ {0 \} \)K \,伽罗瓦组的每个迭代的分裂域的˚F\(^ N \)˚F与高度为n的完整二叉根树的自同构群是同构的。

更新日期:2021-04-13
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