Nil-clean and strongly nil-clean rings
Nil-clean and strongly nil-clean rings
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零洁净环和强零洁净环
DOI:
10.1016/j.jpaa.2015.07.009
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发表时间:
2016-02
影响因子:
0.8
通讯作者:
Zhou, Yiqiang
中科院分区:
文献类型:
--
作者:
Kosan, M. Tamer;Wang, Zhou;Zhou, Yiqiang
An element a of a ring R is nil-clean if a= e+ b where e 2= e∈ R and b is a nilpotent; if further e b= b e, the element a is called strongly nil-clean. The ring R is called nil-clean (resp., strongly nil-clean) if each of its elements is nil-clean (resp., strongly nil-clean). It is proved that an element a is strongly nil-clean iff a is a sum of an idempotent and a unit that commute and a− a 2 is a nilpotent, and that a ring R is strongly nil-clean iff R/J (R) is boolean and J (R) is nil, where J (R) denotes the Jacobson radical of R. The strong nil-cleanness of Morita contexts, formal matrix rings and group rings is discussed in details. A necessary and sufficient condition is obtained for an ideal I of R to have the property that R/I strongly nil-clean implies R is strongly nil-clean. Finally, responding to the question of when a matrix ring is nil-clean, we prove that the matrix ring over a 2-primal ring R is nil-clean iff R/J (R) is boolean and J (R) is nil, ie, R is strongly nil-clean.
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影响因子:
1.1
作者:
M. Koşan;Tsiu-Kwen Lee;Yiqiang Zhou
通讯作者:
M. Koşan;Tsiu-Kwen Lee;Yiqiang Zhou
影响因子:
0.5
作者:
P. Krylov
通讯作者:
P. Krylov
影响因子:
0.9
作者:
A. Diesl
通讯作者:
A. Diesl
DOI:
--
发表时间:
1979
期刊:
--
影响因子:
--
作者:
K. Goodearl
通讯作者:
K. Goodearl
影响因子:
0.7
作者:
Y. Hirano;J. Park
通讯作者:
Y. Hirano;J. Park