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math.AC2008
Toric ideals of normalized graph algebras
Peter M. Johnson
A graph-theoretic method, simpler than existing ones, is used to characterize the minimal set of monomial generators for the integral closure of any algebra of polynomials generate…
math.AC2007
A weighted graph problem from commutative algebra
Peter M. Johnson
We give an especially simple proof of a theorem in graph theory that forms the key part of the solution to a problem in commutative algebra, on how to characterize the integral clo…