In 1987 F.-O. Schreyer conjectured that a local ring R has finite Cohen-Macaulay type if and only if the completion R has finite Cohen-Macaulay type. We prove the conjecture for excellent Cohen-Macaulay local rings and also show by example that it can fail in general.
Cohen-Macaulay types of subgroup lattices of finite abelianp-groups
✍ Scribed by Hideaki Morita
- Publisher
- Springer Japan
- Year
- 1995
- Tongue
- English
- Weight
- 486 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0911-0119
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