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math.CO2025
Stability of products of double Grothendieck polynomials
Andrew Hardt, David Wallach
We prove that products of double Grothendieck polynomials have the same back- and forward-stability numbers as products of Schubert polynomials, characterize which simple reflectio…
math.CO2025
When do Schubert polynomial products stabilize?
Andrew Hardt, David Wallach
The "back-stabilization number" for products of Schubert polynomials is the distance the corresponding permutations must be shifted before the structure constants stabilize. We giv…