On Automorphism-invariant multiplication modules over a noncommutative ring

Yıl 2024, Cilt: 36 Sayı: 36, 73 - 88, 12.07.2024

Le Van Thuyet , Truong Cong Quynh

https://doi.org/10.24330/ieja.1411145

Öz

One of the important classes of modules is the class of multiplication modules over a commutative ring. This topic has been considered by many authors and numerous results have been obtained in this area. After that, Tuganbaev also considered the multiplication module over a noncommutative ring. In this paper, we continue to consider the automorphism-invariance of multiplication modules over a noncommutative ring. We prove that if $R$ is a right duo ring and $M$ is a multiplication, finitely generated right $R$-module with a generating set $\{m_1, \dots , m_n\}$ such that $r(m_i) = 0$ and $[m_iR: M] \subseteq C(R)$ the center of $R$, then $M$ is projective. Moreover, if $R$ is a right duo, left quasi-duo, CMI ring and $M$ is a multiplication, non-singular, automorphism-invariant, finitely generated right $R$-module with a generating set $\{m_1, \dots , m_n\}$ such that $r(m_i) = 0$ and $[m_iR: M] \subseteq C(R)$ the center of $R$, then $M_R \cong R$ is injective.

Anahtar Kelimeler

Automorphism-invariant module, duo ring, quasi-duo ring, multiplication module, commutative multiplication of ideals

Kaynakça

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