NJ-symmetric rings

TL;DR

This paper introduces NJ-symmetric rings, explores their properties, and examines how matrix and polynomial extensions affect NJ-symmetry, revealing that such symmetry does not always extend to these constructions.

Contribution

The paper defines NJ-symmetric rings, studies their properties, and shows that matrix and polynomial extensions may not preserve NJ-symmetry, providing new insights into ring theory.

Findings

NJ-symmetric rings include several known classes like quasi-duo and weak symmetric rings.

Matrix rings over NJ-symmetric rings are not NJ-symmetric for n > 1.

Polynomial extensions of NJ-symmetric rings may fail to be NJ-symmetric.

Abstract

We call a ring $R$ NJ-symmetric if $abc\in N(R)$ implies $bac\in J(R)$ for any $a,b,c\in R$. Some classes of rings that are NJ-symmetric include left (right) quasi-duo rings, weak symmetric rings, and abelian J-clean rings. We observe that if $R/J(R)$ is NJ-symmetric, then $R$ is NJ-symmetric, and therefore, we study some conditions for NJ-symmetric ring $R$ for which $R/J(R)$ is symmetric. It is observed that for any ring $R$, $M_n(R)$ is never an NJ-symmetric ring for all positive integer $n>1$. Therefore, matrix extensions over an NJ-symmetric ring is studied in this paper. Among other results, it is proved that there exists an NJ-symmetric ring whose polynomial extension is not NJ-symmetric.