A Simple Proof of some Generalized Principal Ideal Theorems
David Eisenbud, Craig Huneke, Bernd Ulrich
Abstract
Using symmetric algebras we simplify (and slightly strengthen) the Bruns-Eisenbud-Evans "generalized principal ideal theorem" on the height of order ideals of non-minimal generators in a module. We also obtain a simple proof and an extension of a result by Kwieciński, which estimates the height of certain Fitting ideals of modules having an equidimensional symmetric algebra.
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