Twisted Schubert polynomials
Twisted Schubert polynomials
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DOI:
10.1007/s00029-022-00802-1
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发表时间:
2019-05
期刊:
影响因子:
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通讯作者:
Ricky Ini Liu
中科院分区:
文献类型:
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作者:
Ricky Ini Liu
We prove that twisted versions of Schubert polynomials defined byandare monomial positive and give a combinatorial formula for their coefficients. In doing so, we reprove and extend a previous result about positivity of skew divided difference operators and show how it implies the Pieri rule for Schubert polynomials. We also give positive formulas for double versions of theas well as their localizations.