Torsion pairs and related modules over trivial ring extensions

Yıl 2024, Erken Görünüm, 1 - 14

Lixin Mao

https://doi.org/10.15672/hujms.1272122

Öz

Let $R\ltimes M$ be a trivial extension of a ring $R$ by an $R$-$R$-bimodule $M$. We first study how to construct torsion pairs over $R\ltimes M$ from torsion pairs over $R$. Some characterizations of finitely generated (presented) modules, flat modules and coherent rings relative to a torsion pair over $R\ltimes M$ are obtained. Then we discuss the transfers of torsion pairs over $R\ltimes M$ to $R$. Finally, some applications are given in Morita context rings.

Anahtar Kelimeler

Torsion pair, Trivial ring extension, Morita context ring

Destekleyen Kurum

NSFC

Proje Numarası

12171230, 12271249

Kaynakça

• [1] H. Bass, The Morita Theorems, Mimeographed Notes. University of Oregon, 1962.