Key polynomials and a flagged Littlewood-Richardson rule
作者： Victor Reiner , Mark Shimozono
DOI: 10.1016/0097-3165(95)90083-7
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摘要: Abstract This paper studies a family of polynomials called key , introduced by Demazure and investigated combinatorially Lascoux Schutzenberger. We give two new combinatorial interpretations for these show how they provide the connection between relatively recent expressions Schubert . also flagged Littlewood—Richardson rule an expansion skew Schur function as nonnegative sum polynomials.
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