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Plethystic substitution : ウィキペディア英語版 | Plethystic substitution Plethystic substitution is a shorthand notation for a common kind of substitution in the algebra of symmetric functions and that of symmetric polynomials. It is essentially basic substitution of variables, but allows for a change in the number of variables used. ==Definition==
The formal definition of plethystic substitution relies on the fact that the ring of symmetric functions is generated as an ''R''-algebra by the power sum symmetric functions
For any symmetric function and any formal sum of monomials , the ''plethystic substitution'' f() is the formal series obtained by making the substitutions
in the decomposition of as a polynomial in the ''p''k's.
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「Plethystic substitution」の詳細全文を読む
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