Trimming five generated Gorenstein ideals

Authors

Luigi Ferraro, The University of Texas Rio Grande ValleyFollow
W. Frank Moore

Document Type

Article

Publication Date

4-21-2025

Abstract

Let (𝑅,𝔪,𝕜) 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 𝔪; 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 𝑅/𝐽 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.

Comments

Original published version available at https://doi.org/10.1080/00927872.2025.2478224

Recommended Citation

Ferraro, Luigi, and W. Frank Moore. "Trimming five generated Gorenstein ideals." Communications in Algebra (2025): 1-15. https://doi.org/10.1080/00927872.2025.2478224

Publication Title

Communications in Algebra

DOI

10.1080/00927872.2025.2478224