MODULES WHICH ARE INVARIANT UNDER AUTOMORPHISMS OF THEIR INJECTIVE HULLS

被引:83
作者
Lee, Tsiu-Kwen [1 ]
Zhou, Yiqiang [2 ]
机构
[1] Natl Taiwan Univ, Dept Math, Taipei 106, Taiwan
[2] Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Automorphism-invariant module; CS-module; pseudo-injective module; quasi-injective module; semiprime right Goldie ring; RINGS;
D O I
10.1142/S0219498812501599
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
A module is defined to be an automorphism-invariant module if it is invariant under automorphisms of its injective hull. Quasi-injective modules and, more generally, pseudo-injective modules are all automorphism-invariant. Here we develop basic properties of these modules, and discuss when an automorphism-invariant module is quasi-injective or injective. Some known results on quasi-injective and pseudo-injective modules are extended.
引用
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页数:9
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