2 papers
math.CO2024
The structure of interval orders with no infinite antichain
Maurice Pouzet, Imed Zaguia
We prove that if is a nonprime graph with either no infinite independent set or no infinite clique, then every vertex of belongs to a maximal strong module distinct f…
math.CO2023
Absolute retracts of reflexive oriented graphs: the role of the MacNeille completion
Hans-Jürgen Bandelt, Maurice Pouzet, Faouzi Saïdane
We characterize the absolute retracts in the category of reflexive oriented graphs, that is, antisymmetric reflexive graphs, where morphisms between objects preserve arcs (which ma…