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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 List of E8 polytopes ： ウィキペディア英語版 List of E8 polytopes In 8-dimensional geometry, there are 255 uniform polytopes with E8 symmetry. The three simplest forms are the 421, 241, and 142 polytopes, composed of 240, 2160 and 17280 vertices respectively. These polytopes can be visualized as symmetric orthographic projections in Coxeter planes of the E8 Coxeter group, and other subgroups. == Graphs== Symmetric orthographic projections of these 255 polytopes can be made in the E8, E7, E6, D7, D6, D5, D4, D3, A7, A5 Coxeter planes. Ak has ''()'' symmetry, Dk has ''()'' symmetry, and E6, E7, E8 have ''()'', ''()'', ''()'' symmetry respectively. In addition there are two other degrees of fundamental invariants, order () and () for the E8 group that represent Coxeter planes. 11 of these 255 polytopes are each shown in 14 symmetry planes, with vertices and edges drawn, and vertices colored by the number of overlapping vertices in each projective position. 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「List of E8 polytopes」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.