Welcome to the webpage of Oscar Defrain,
from the Laboratoire d’Informatique et Systèmes (LIS - UMR CNRS 7020),
at Aix-Marseille University (Campus de Luminy, Marseille).

Short bio

I am an associate professor (maître de conférences) at the Aix-Marseille University, member of the ACRO team, part of the LIS laboratory. Prior to that I spent one year as a postdoc at University of Warsaw. I defended my Ph.D. at Université Clermont Auvergne. My research focuses on algorithms and combinatorics mainly in graphs, hypergraphs, lattice structures, and Boolean logic.

I am in charge of the ACRO seminar and ACRO working group since 2023: please contact me if you want to come to Marseille and give a talk!


Graphs, hypergraphs, lattice theory, algorithmic enumeration, hypergraph dualization, implicational bases, meet-irreducible, minimal transversals, maximal independent sets, minimal dominating sets.