J. A. Samper

activity

20182026

most citedDual matroid polytopes and internal activity of independence complexes

5 citations · 5 across the 7 of their papers we have counts for

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Showing 2026Show all

2 papers · 1 filter

math.AG2026

Characterization of Stanley-Reisner varieties by their automorphism group

Roberto Díaz, José Alejandro Samper

We study the automorphism ind-group of a Stanley-Reisner variety $X_{Δ}$ through a combinatorial toolkit on the underlying complex: a facet closure operator, its Demazure roots, and…

math.CO2026

Poset Partitions and the Combinatorics of the $cd$ -Index

Felipe Caster, Dan Guyer, José Alejandro Samper

We introduce a new class of Eulerian posets, called S-partitionable posets, which have a non-negative cd-index. These posets are a generalization of S-shellable complexes introduce…

Characterization of Stanley-Reisner varieties by their automorphism group

Poset Partitions and the Combinatorics of the cd-Index

Poset Partitions and the Combinatorics of the $cd$ -Index