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arXiv · 2507.19019

Ascent and descent of Artinian module structures under flat base changes

Tran Do Minh Chau·Le Thanh Nhan
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Abstract

Let $\varphi: R\rightarrow S$ be a flat local homomorphism between commutative Noetherian local rings. In this paper, the ascent and descent of Artinian module structures between $R$ and $S$ are investigated. For an Artinian $R$-module $A$, the structure of $A\otimes_RS$ is described. As an application, the Artinianess of certain local cohomology modules is clarified.

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Tran Do Minh Chau, Le Thanh Nhan. 2025-07-25. Ascent and descent of Artinian module structures under flat base changes. https://doi.org/10.1080/00927872.2024.2321513

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