Quasipolarity of Generalized Matrix Rings

Orhan Gurgun, Sait Halicioglu, Abdullah Harmanci

An element $a$ of a ring $R$ is called \emph{quasipolar} provided that there exists an idempotent $p\in R$ such that $p\in com{m}^2(a)$, $a+p\in U(R)$ and $ap\in R^{qnil}$. A ring $R…