2 papers
math.CO2020
Semi-invariants of Binary Forms and Sylvester's Theorem
William Y. C. Chen, Ivy D. D. Jia
We obtain a combinatorial formula related to the shear transformation for semi-invariants of binary forms, which implies the classical characterization of semi-invariants in terms…
math.CO2020
Semi-invariants of Binary Forms Pertaining to a Unimodality Theorem of Reiner and Stanton
William Y. C. Chen, Ivy D. D. Jia
The symmetric difference of the -binomial coefficients was introduced by Reiner and Stanton. They proved that is s…