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math.CO2026
Stretched Schubert coefficients are eventually quasi-polynomial
Igor Pak, Zachary Slonim
For a permutation , let be the permutation with scaled Lehmer code. For given and integer , the stretched Schubert coefficients are…
math.CO2026
Saturation property fails for Schubert coefficients
Igor Pak, Colleen Robichaux
The saturation property for Littlewood--Richardson coefficients was established by Knutson and Tao in 1999. In 2004, Kirillov conjectured that the saturation property extends to Sc…