Robert Angarone

collaborators

3 papers

math.CO2026

Superspace coinvariants and hyperplane arrangements

Robert Angarone, Patricia Commins, Trevor Karn +2

Let $I^c ◯$ be the {\em superspace ring} of polynomial-valued differential forms on affine $n$ -space. The natural action of the symmetric group $S_{n}$ on $n$ -space induces a…

math.CO2025

Hadamard Products of dual Jacobi-Trudi matrices

Robert Angarone, Jang Soo Kim, Jaeseong Oh +1

We study positivity properties of Hadamard products of Jacobi-Trudi matrices. MalÃ³ proved that the Hadamard (entrywise) product of two totally positive upper-triangular Toeplitz m…

math.CO2025

Cylindrical Networks and Total Nonnegativity

Robert Angarone

We prove that an infinite block-Toeplitz matrix with finite diagonal support is totally nonnegative if and only if it is the weight matrix of a cylindrical network. This generalize…