Let S = k x 1 x n be a polynomial ring, and let ω S be its canonical module. First, we will define squarefreeness for n -graded S-modules. A Stanley-Reisner ring k = S/I , its syzygy module Syz i k , and Ext i S k ω S are always squarefree. This notion will simplify some standard arguments in the S
The canonical module of a Stanley-Reisner ring
✍ Scribed by Hans-Gert Gräbe
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 378 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0021-8693
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