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math.CO2021★ 1 cited
Set-valued tableaux rule for Lascoux polynomials
Tianyi Yu
Lascoux polynomials generalize Grassmannian stable Grothendieck polynomials and may be viewed as K-theoretic analogs of key polynomials. The latter two polynomials have combinatori…
math.CO2021★ 3 cited
Grothendieck to Lascoux expansions
Mark Shimozono, Tianyi Yu
We establish the conjecture of Reiner and Yong for an explicit combinatorial formula for the expansion of a Grothendieck polynomial into the basis of Lascoux polynomials. This expa…