Mathematics – Commutative Algebra
Scientific paper
2006-06-27
Mathematics
Commutative Algebra
18 pages
Scientific paper
Associated to any graph is a toric ideal whose generators record relations among the cuts of the graph. We study these ideals and the geometry of the corresponding toric varieties. Our theorems and conjectures relate the combinatorial structure of the graph and the corresponding cut polytope to algebraic properties of the ideal. Cut ideals generalize toric ideals arising in phylogenetics and the study of contingency tables.
Sturmfels Bernd
Sullivant Seth
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