20/04/28 11:43:27 RHvq6KgG.net
>>513
つづき
３）ところで、Neukirch?Uchida は、これ
”In mathematics, the Neukirch?Uchida theorem shows that all problems about algebraic number fields can be reduced to problems about their absolute Galois groups.”とかあって
”Neukirch-Uchida定理は、遠アーベル幾何学の基礎的な成果の一つであり、基本群が十分に非アーベルである場合には、幾何学的対象の性質を基本群の性質に還元することを主なテーマとしている”なのです（＾＾
URLﾘﾝｸ(en.wikipedia.org)
Neukirch?Uchida theorem
(抜粋)
In mathematics, the Neukirch?Uchida theorem shows that all problems about algebraic number fields can be reduced to problems about their absolute Galois groups. Jurgen Neukirch (1969) showed that two algebraic number fields with the same absolute Galois group are isomorphic,
and Koji Uchida (1976) strengthened this by proving Neukirch's conjecture that automorphisms of the algebraic number field correspond to outer automorphisms of its absolute Galois group. Florian Pop (1990, 1994) extended the result to infinite fields that are finitely generated over prime fields.
The Neukirch?Uchida theorem is one of the foundational results of anabelian geometry, whose main theme is to reduce properties of geometric objects to properties of their fundamental groups, provided these fundamental groups are sufficiently non-abelian.
（1行 DeepL訳）
Neukirch-Uchida定理は、遠アーベル幾何学の基礎的な成果の一つであり、基本群が十分に非アーベルである場合には、幾何学的対象の性質を基本群の性質に還元することを主なテーマとしている。
つづく