翻訳と辞書 Words near each other ・ Peahi, Hawaii ・ Peaine Township, Michigan ・ Peak ・ PEAK (automotive products) ・ Peak (constituency) ・ Peak (novel) ・ Peak 10 ・ Peak 10 (Tenmile Range) ・ Peak 100 ・ Peak 11,272 (White Cloud Mountains) ・ Peak 13,762 (Silver King Peak) ・ Peak 2 Peak Gondola ・ Peak 2266 ・ Peak 5390 ・ Peak Aerospace Me 109 ・ Peak algebra ・ Peak Antifreeze Indy 300 ・ Peak bagging ・ Peak bone mass ・ Peak calling ・ Peak capitalism ・ Peak car ・ Peak Cavern ・ Peak Charles National Park ・ Peak Church ・ Peak coal ・ Peak copper ・ Peak Corporate Network ・ Peak Crossing, Queensland ・ Peak Dale Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Peak algebra ： ウィキペディア英語版 Peak algebra In mathematics, the peak algebra is a (non-unital) subalgebra of the group algebra of the symmetric group ''S''''n'', studied by . It consists of the elements of the group algebra of the symmetric group whose coefficients are the same for permutations with the same peaks. (Here a peak of a permutation σ on is an index ''i'' such that σ(''i''–1)<σ(''i'')>σ(''i''+1).) It is a left ideal of the descent algebra. The direct sum of the peak algebras for all ''n'' has a natural structure of a Hopf algebra. ==References== * 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「Peak algebra」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.