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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Catanese surface ： ウィキペディア英語版 Catanese surface In mathematics, a Catanese surface is one of the surfaces of general type introduced by . ==Construction== The construction starts with a quintic ''V'' with 20 double points. Let ''W'' be the surface obtained by blowing up the 20 double points. Suppose that ''W'' has a double cover ''X'' branched over the 20 exceptional −2-curves. Let ''Y'' be obtained from ''X'' by blowing down the 20 −1-curves in ''X''. If there is a group of order 5 acting freely on all these surfaces, then the quotient ''Z'' of ''Y'' by this group of order 5 is a Catanese surface. Catanese found a 4-dimensional family of curves constructed like this. 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「Catanese surface」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.