Symbolic powers and matroids

Matteo Varbaro
2010 Proceedings of the American Mathematical Society  
We prove that all the symbolic powers of a Stanley-Reisner ideal I Δ are Cohen-Macaulay if and only if the simplicial complex Δ is a matroid.
doi:10.1090/s0002-9939-2010-10685-8 fatcat:n3yepfvakjb3zj634lsqaevgu4