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arXiv math/0506519math.NTmath.CV
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几何伽罗瓦论、非线性数域和Idele类群的伽罗瓦群解释

Geometric Galois Theory, Nonlinear Number Fields and a Galois Group Interpretation of the Idele Class Group

T. M. Gendron, A. Verjovsky

摘要:

本文研究了代数数域的全纯扩张的刻画。对Q上的任意数域KGalois定义了一个双曲化Adele类群,并研究了该群上分次全纯函数的Hardy空间H[K].证明了由非零迹函数定义的射影化PH[K]中的超平面N[K]具有两个部分定义的运算+和x,关于这两个运算存在K到N[K]的典范单态.我们称N[K]为K的非线性域扩张。定义了非线性域的伽罗瓦群,证明了当L/K是伽罗瓦群时,Gal(N[L]/N[K])同构于Gal(L/K).若Q^{ab}表示Q的极大阿贝尔扩张,C(Q)表示Idele类群,$ \bar{N} [Q^{ab}]=PH[K]是完全射影化,则存在C(Q)到Gal_{+}(\bar{N} [Q^{ab}]/Q)和Gal_{x}(\bar{N} [Q^{ab}]/Q)的嵌入,即自同构保持+的“伽罗瓦群“. x仅

英文摘要:

This paper concerns the description of holomorphic extensions of algebraic number fields. We define a hyperbolized adele class group for every number field K Galois over Q and consider the Hardy space H[K] of graded-holomorphic functions on the hyperbolized adele class group. We show that the hyperplane N[K] in the projectivization PH[K] defined by the functions of non-zero trace possesses two partially-defined operations + and x, with respect to which there is canonical monomorphism of K into N[K]. We call N[K] a nonlinear field extension of K. We define Galois groups for nonlinear fields and show that Gal(N[L]/N[K]) is isomorphic to Gal(L/K) if L/K is Galois. If Q^{ab} denotes the maximal abelian extension of Q, C(Q) the idele class group and $\bar{N}[Q^{ab}]=PH[K] is the full projectivization, then there are embeddings of C(Q) into Gal_{+}(\bar{N}[Q^{ab}]/Q) and Gal_{x}(\bar{N}[Q^{ab}]/Q), the "Galois groups" of automorphisms preserving + resp. x only.

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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