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arXiv · 2004.13190

Fundamental Results on $s$-Closures

William D. Taylor
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Abstract

This paper establishes the fundamental properties of the $s$-closures, a recently introduced family of closure operations on ideals of rings of positive characteristic. The behavior of the $s$-closure of homogeneous ideals in graded rings is studied, and criteria are given for when the $s$-closure of an ideal can be described exactly in terms of its tight closure and rational powers. Sufficient conditions are established for the weak $s$-closure to equal to the $s$-closure. A generalization of the Briancon-Skoda theorem is given which compares any two different $s$-closures applied to powers of the same ideal.

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William D. Taylor. 2020-04-27. Fundamental Results on $s$-Closures. https://arxiv.org/abs/2004.13190

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