2 papers
math.CO2021
Principal specialization of dual characters of flagged Weyl modules
Karola Mészáros, Avery St. Dizier, Arthur Tanjaya
Schur polynomials are special cases of Schubert polynomials, which in turn are special cases of dual characters of flagged Weyl modules. The principal specialization of Schur and S…
math.CO2021
Inclusion-exclusion on Schubert polynomials
Karola Mészáros, Arthur Tanjaya
We prove that an inclusion-exclusion inspired expression of Schubert polynomials of permutations that avoid the patterns 1432 and 1423 is nonnegative. Our theorem implies a partial…