on direct sums of baer modules
Abstract
the notion of baer modules was defined recently
the notion of baer modules was defined recently
We study multiplication modules. The rings are not assumed to be commutative. Several criteria with some applications given for a direct sum of modules module.
We introduce the notion of lifting Baer modules, as a generalization of both Baer and lifting modules and give some of their properties. A module $M$ is called lifting Baer if right annihilator of a left ideal of ${\rm End}(M)$ lies above a direct summand of M. Also, we define th
Let $R$ be a ring, $sigma$ be an endomorphism of $R$ and $M_R$ be a $sigma$-rigid module. A module $M_R$ is called quasi-Baer if the right annihilator of a principal submodule of $R$ is generated by an idempotent. It is shown that an $R$-module $M_R$ is a quasi-Baer module if and