|
|||||
|
|
S-SUPERFLUOUS AND S-ESSENTIAL HOMOMORPHISMS |
|
| Authors: | Zhu Haiyan Ding Nanqing |
| Abstract: | Let R be a ring and S a class of R-modules. S-superfluous epimorphisms and S-essential monomorphisms are introduced and studied in this article. As appli-cations, some new characterizations of yon Neumann regular rings and perfect rings are given. Finally, these notions are also used to study minimal homomorphisms. |
| Keywords: | S-essential monomorphism S-superfluous epimorphism (pre)cover (pre)envelope |
| 本文献已被 万方数据 等数据库收录！ | |