作为标准投降映射的Artin符号
The Artin Symbol as a Canonical Capitulation Map
摘要:
证明了存在一个正则的保序子群格映射$ψ$,它将伽罗瓦数域$\K$的理想类群的子群格$\Sub(A)$映射到Hilbert类域的子域格$\Sub(\KH/\K)$.此外,这个映射是一个投降映射,因为$A' \subset A$类中的所有素数都在$ψ(A')$中投降。特别是,我们有一个新的,强版本的广义希尔伯特94定理,这证实了Myiake的结果,并增加了更多的结构(部分)的投降内核的子领域的$\KH$。
英文摘要:
We show that there is a canonical, order preserving map $ψ$ of lattices of subgroups, which maps the lattice $\Sub(A)$ of subgroups of the ideal class group of a galois number field $\K$ into the lattice $\Sub(\KH/\K)$ of subfields of the Hilbert class field. Furthermore, this map is a capitulation map in the sense that all the primes in the classes of $A' \subset A$ capitulate in $ψ(A')$. In particular we have a new, strong version of the generalized Hilbert 94 Theorem, which confirms the result of Myiake and adds more structure to (part) of the capitulation kernel of subfields of $\KH$.
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