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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 Sheaf of planes ： ウィキペディア英語版 Sheaf of planes In mathematics, a sheaf of planes is the set of all planes that have the same common line.〔(Definition on ''Mathworld Wolfram'' )〕 It may also be known as a pencil or fan of planes. When extending the concept of line to the line at infinity, a set of parallel planes can be seen as a ''sheaf of planes'' intersecting in a ''line at infinity''. To distinguish it from the more common definition the adjective ''parallel'' can be added to it, resulting in the expression: ''parallel sheaf of planes''.〔(Vitutor: Sheaf of Planes )〕 ==See also== *Book embedding, a notion of graph embedding onto sheafs of half-planes 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「Sheaf of planes」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.