Eulerian polynomials for subarrangements of Weyl arrangements

Ahmed Umer Ashraf, Tan Nhat Tran, Masahiko Yoshinaga

Let $\mathcal{A}$ be a Weyl arrangement. We introduce and study the notion of $\mathcal{A}$-Eulerian polynomial producing an Eulerian-like polynomial for any subarrangement of $\ma…