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单词 SchurPolynomial
释义

Schur polynomial


A Schur polynomial is a special symmetric polynomial associatedto a partition of an integer, or equivalently to a Young diagram.Schur polynomials also have a power seriesMathworldPlanetmath generalizationPlanetmathPlanetmath, theSchur functions.

First we define some notation. Let λ be a partition of n,and let T be a filling of the Young diagram for λ. Then byxT we mean the monomialPlanetmathPlanetmathPlanetmath

xT=i=1xici(T),

where ci(T) is the number of times the number i appears in thefilling T. Since T only has finitely many boxes, the productPlanetmathPlanetmath isfinite. For example, let λ=(3,3,2,2), and let T be thefilling

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