Deformation of Residual Intersections

Fuente: arXiv
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Hauptverfasser: Hassanzadeh, Hamid, Vasconcellos, Kevin
Format: Preprint
Veröffentlicht: 2024
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author Hassanzadeh, Hamid
Vasconcellos, Kevin
author_facet Hassanzadeh, Hamid
Vasconcellos, Kevin
contents It is shown that in a Cohen-Macaulay local ring, the generic linkage of an ideal $I$ is a deformation of the arbitrary linkage of $I$. This fact does not need $I$ to be a Cohen-Macaulay ideal. The same holds for $s$-residual intersections of $I$ when $s$ does not exceed the height of $I$ by one. Under some slight conditions on $I$, one further generalizes this principle to encompass any $s$-residual intersection.
format Preprint
id arxiv_https___arxiv_org_abs_2405_12170
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Deformation of Residual Intersections
Hassanzadeh, Hamid
Vasconcellos, Kevin
Commutative Algebra
It is shown that in a Cohen-Macaulay local ring, the generic linkage of an ideal $I$ is a deformation of the arbitrary linkage of $I$. This fact does not need $I$ to be a Cohen-Macaulay ideal. The same holds for $s$-residual intersections of $I$ when $s$ does not exceed the height of $I$ by one. Under some slight conditions on $I$, one further generalizes this principle to encompass any $s$-residual intersection.
title Deformation of Residual Intersections
topic Commutative Algebra
url https://arxiv.org/abs/2405.12170