翻訳と辞書 |
Freiheitssatz : ウィキペディア英語版 | Freiheitssatz In mathematics, the Freiheitssatz (German: "freedom/independence theorem": ''Freiheit'' + ''Satz'') is a result in the presentation theory of groups. The result was proposed by the German mathematician Max Dehn and proved by his student, Wilhelm Magnus, in his doctoral thesis. ==Statement of the theorem==
Consider a group presentation : given by ''n'' generators ''x''''i'' and a single cyclically reduced relator ''r''. If ''x''1 appears in ''r'', then the subgroup of ''G'' generated by ''x''2, ..., ''x''''n'' is a free group, freely generated by ''x''2, ..., ''x''''n''. In other words, the only relations involving ''x''2, ..., ''x''''n'' are the trivial ones.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Freiheitssatz」の詳細全文を読む
スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|