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In algebra, plethysm is an operation on symmetric functions introduced by , who denoted it by ⊗. The word "plethysm" for this operation (after the Greek word πληθυσμός meaning "multiplication") was introduced later by , who said that the name was suggested by M. L. Clark. If symmetric functions are identified with operations in lambda rings, then plethysm corresponds to composition of operations. ==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「Plethysm」の詳細全文を読む スポンサード リンク
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