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On free resolutions of some semigroup rings

✍ Scribed by Barucci, Valentina; Fröberg, Ralf; Şahin, Mesut


Book ID
123254614
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
274 KB
Volume
218
Category
Article
ISSN
0022-4049

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Free Resolutions and Change of Rings
✍ Srikanth Iyengar 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 270 KB

Projective resolutions of modules over a ring R are constructed starting from appropriate projective resolutions over a ring Q mapping to R. It is shown that such resolutions may be chosen to be minimal in codimension F 2, but not in codimension 3. This is used to obtain minimal resolutions for esse