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math.AC2009
Combinatorics of symbolic Rees algebras of edge ideals of clutters
Jose Martinez-Bernal, Carlos Renteria, Rafael H. Villarreal
Let C be a clutter and let I be its edge ideal. We present a combinatorial description of the minimal generators of the symbolic Rees algebra Rs(I) of I. It is shown that the minim…
math.AC2009
Ehrhart clutters: Regularity and Max-Flow Min-Cut
Jose Martinez-Bernal, Edwin O'Shea, Rafael H. Villarreal
If C is a clutter with n vertices and q edges whose clutter matrix has column vectors V={v1,...,vq}, we call C an Ehrhart clutter if {(v1,1),...,(vq,1)} is a Hilbert basis. Letting…