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The representation of $\mathfrak{S}_n$ on the cohomology of the permutohedral variety and gamma vectors of partitioned permutohedra
- Publication Year :
- 2024
-
Abstract
- Foata and Sch\"{u}tzenberger gave an expansion for the Eulerian polynomial $A_n(t)$ in terms of the basis $\{t^j(1+t)^{n-1-2j}\}$ for the space of polynomials $f(t)$ satisfying $f(t)=t^{n-1}f(1/t)$. We generalize this result in two ways. First, we provide an analogue for the graded representation of the symmetric group $\mathfrak{S}_n$ on the cohomology of the permutohedral variety. Then we give expansions $h$-polynomials of polytopes obtained by cutting permutohedra with hyperplanes orthogonal to simple roots in terms of the same basis.<br />Comment: 13 pages
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2405.09242
- Document Type :
- Working Paper