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arXiv · 2511.14494

(projectively coresolved) Gorenstein flat modules over tensor rings

Guoliang Tang·Jiaqun Wei
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Abstract

Let $T_R(M)$ be a tensor ring, where $R$ is a ring and $M$ is an $N$-nilpotent $R$-bimodule. Under certain conditions, we characterize projectively coresolved Gorenstein flat modules over $T_R(M)$, showing that a $T_R(M)$ module $(X,u)$ is projectively coresolved Gorenstein flat if and only if $u$ is monomorphic and $coker(u)$ is a projectively coresolved Gorenstein flat $R$-module. A class of Gorenstein at modules over $T_R(M)$ are also explicitly described. We discuss applications to trivial ring extensions and Morita context rings.

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Guoliang Tang, Jiaqun Wei. 2025-11-18. (projectively coresolved) Gorenstein flat modules over tensor rings. https://arxiv.org/abs/2511.14494

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