Hi. I'm trying to figure out what $\displaystyle M=Rm$ means in an assignment question (I won't post the question since its being marked). Some possibly relevant context:

$\displaystyle M$ is an $\displaystyle R $ module

$\displaystyle R $ is a PID

$\displaystyle \textrm{ann}_R(m) = (p)$ for some $\displaystyle p \in R$