Rafael S. González D'León

collaborators

4 papers

math.CO2026

A Möbius function computing $h$ -polynomials of nestohedra

Nicolas Avila Ramirez, Sergio A. Carrillo, Rafael S. González D'León

We introduce a poset of weighted hypergraphs on a fixed vertex set which has a remarkable property: the Möbius values of the intervals associated to any hypergraph give, up to sign…

math.CO2026

Weighted bond posets and a new chromatic symmetric function

Rafael S. González D'León, Michelle L. Wachs

The classical bond lattice of a graph was used in a formula of Whitney to compute the chromatic polynomial. In this paper, we use weighted versions of the bond lattice, to introduc…

math.CO2023

Whitney Twins, Whitney Duals, and Operadic Partition Posets

Rafael S. González D'León, Joshua Hallam, Yeison A. Quiceno D

We say that a pair of nonnegative integer sequences $({a_{k}}_{k \geq 0}, {b_{k}}_{k \geq 0})$ is Whitney-realizable if there exists a poset $P$ for which (the absolute values) of the…

math.CO2023

Realizing the $s$ -permutahedron via flow polytopes

Rafael S. González D'León, Alejandro H. Morales, Eva Philippe +2

Ceballos and Pons introduced the $s$ -weak order on $s$ -decreasing trees, for any weak composition $s$ . They proved that it has a lattice structure and further conjectured that it c…

A Möbius function computing h-polynomials of nestohedra

Weighted bond posets and a new chromatic symmetric function

Whitney Twins, Whitney Duals, and Operadic Partition Posets

Realizing the s-permutahedron via flow polytopes

A Möbius function computing $h$ -polynomials of nestohedra

Realizing the $s$ -permutahedron via flow polytopes