Trimming five generated Gorenstein ideals
Let (๐ ,๐ช,๐) be a regular local ring of dimension 3. Let I be a Gorenstein ideal of R of grade 3. It follows from a result of Buchsbaum and Eisenbud that there is a skew-symmetric matrix of odd size such that I is generated by the sub-maximal pfaffians of this matrix. Let J be the ideal obtained by multiplying some of the pfaffian generators of I by ๐ช; we say that J is a trimming of I. In a previous work, the first author and A. Hardesty constructed an explicit free resolution of ๐ /๐ฝ and computed a DG algebra structure on this resolution. They utilized these products to analyze the Tor algebra of such trimmed ideals. Missing from their result was the case where I is five generated. In this paper we address this case.
Authors
- W. Frank Moore
- Luigi Ferraro (ORCID: https://orcid.org/0000-0003-2860-6568)
Institutions
- Wake Forest University (US)
Publication Details
- Journal
- Communications in Algebra
- Published
- 2025-04-21
- DOI
- https://doi.org/10.1080/00927872.2025.2478224
- Primary Topic
- Commutative Algebra and Its Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00