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TitleHow to shell a monoid
Author(s) Irena Peeva, Victor Reiner, Bernd Sturmfels
TypeArticle in Journal
AbstractFor a finitely generated submonoid Λ of N^d, we consider minimal free resolutions of a field k as a module over the monoid algebra k[Λ]. Using a result of Laudal and Sletsjøe which inteprets the ranks of the free modules in the resolution as the homology of certain simplicial complexes
associated to posets, we show how non-commutative Gröbner bases and
the non-pure shellings of Björner and Wachs can be used to prove new
results about these resolutions. In particular, when k[Λ] is the coordinate ring of a normal affine toric variety, we give an explicit minimal free resolution for k as a k[Λ]-module.
Length16
File
LanguageEnglish
JournalMathematische Annalen
Volume310
Pages379 - 393
Year1998
Translation No
Refereed No
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