extensions of regular rings
چکیده
let $r$ be an associative ring with identity. an element $x in r$ is called $mathbb{z}g$-regular (resp. strongly $mathbb{z}g$-regular) if there exist $g in g$, $n in mathbb{z}$ and $r in r$ such that $x^{ng}=x^{ng}rx^{ng}$ (resp. $x^{ng}=x^{(n+1)g}$). a ring $r$ is called $mathbb{z}g$-regular (resp. strongly $mathbb{z}g$-regular) if every element of $r$ is $mathbb{z}g$-regular (resp. strongly $mathbb{z}g$-regular). in this paper, we characterize $mathbb{z}g$-regular (resp. strongly $mathbb{z}g$-regular) rings. furthermore, this paper includes a brief discussion of $mathbb{z}g$-regularity in group rings.