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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 Pontryagin cohomology operation ： ウィキペディア英語版 Pontryagin cohomology operation In mathematics, a Pontryagin cohomology operation is a cohomology operation taking cohomology classes in ''H''2''n''(''X'',Z/''p''''r''Z) to ''H''2''pn''(''X'',Z/''p''''r''+1Z) for some prime number ''p''. When ''p''=2 these operations were introduced by and were named Pontrjagin squares by (with the term "Pontryagin square" also being used). They were generalized to arbitrary primes by . ==See also== *Steenrod operation 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「Pontryagin cohomology operation」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.