...That is, for any point z ∈ D , the set { r ( z )| r ∈ G } has no accumulation points in D. A group G (based on linear fractional transformations) with this property is called a Klein group, and especially when D is a disk or half plane, it is called a Fuchs group. f is a meromorphic function on the Riemann surface D / G , and vice versa. ... *Some of the terminology used in reference to the "Klein group" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…すなわち,任意の点z∈Dに対して,集合{r(z)|r∈G}はDに集積点をもたない。この性質のあるG(一次分数変換を元とする)をクライン群Klein groupといい,とくにDが円板または半平面のときフックス群Fuchs groupという。fはリーマン面D/Gの上の有理型関数であり,また逆も正しい。… ※「Klein group」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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