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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 Coxeter matroid ： ウィキペディア英語版 Coxeter matroid In mathematics, Coxeter matroids are generalization of matroids depending on a choice of a Coxeter group ''W'' and a parabolic subgroup ''P''. Ordinary matroids correspond to the case when ''P'' is a maximal parabolic subgroup of a symmetric group ''W''. They were introduced by , who named them after H. S. M. Coxeter. give a detailed account of Coxeter matroids. ==Definition== Suppose that ''W'' is a Coxeter group, generated by a set ''S'' of involutions, and ''P'' is a parabolic subgroup (the subgroup generated by some subset of ''S''). A Coxeter matroid is a subset of ''W''/''P'' that for every ''w'' in ''W'' contains a unique minimal element with respect to the ''w''-Bruhat order. 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「Coxeter matroid」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.