Deformation of Residual Intersections
Commutative Algebra
2026-04-23 v2
Abstract
It is shown that in a Cohen-Macaulay local ring, the generic linkage of an ideal is a deformation of the arbitrary linkage of . This fact does not need to be a Cohen-Macaulay ideal. The same holds for -residual intersections of when does not exceed the height of by one. Under some slight conditions on , one further generalizes this principle to encompass any -residual intersection.
Cite
@article{arxiv.2405.12170,
title = {Deformation of Residual Intersections},
author = {Hamid Hassanzadeh and Kevin Vasconcellos},
journal= {arXiv preprint arXiv:2405.12170},
year = {2026}
}
Comments
24 pages