Extensions and topological conditions of NJ rings

M Jiang, Y Wang, Y Ren - Turkish Journal of Mathematics, 2019 - journals.tubitak.gov.tr
A ring $ R $ is said to be NJ if $ J (R)= N (R) $. This paper mainly studies the relationship
between NJ rings and related rings, and investigates the Dorroh extension, the Nagata …

On rings whose Jacobson radical coincides with upper nilradical

G Ma, Y Wang, Y Ren - Turkish Journal of Mathematics, 2021 - journals.tubitak.gov.tr
We call a ring~ R is JN if whose Jacobson radical coincides with upper nilradical, and R is
right SR if each element r∈ R can be written as r= s+ r where s is an element from the right …

[HTML][HTML] A NEW CHARACTERIZATION OF SIMPLE K3-GROUPS

DAI Xue, Q ZHANG, G Lü - 数学杂志, 2018 - sxzz.whu.edu.cn
In this paper, we study the influence of sn (G) on simple K 3-groups. Through the analysis of
the subgroups and chief factor of the finite group G, we give a characterization of simple K 3 …