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Images of injectives and universally cotorsionless modules

 

作者: S. Page,  

 

期刊: Communications in Algebra  (Taylor Available online 1979)
卷期: Volume 7, issue 2  

页码: 193-201

 

ISSN:0092-7872

 

年代: 1979

 

DOI:10.1080/00927877908822341

 

出版商: Marcel Dekker, Inc.

 

数据来源: Taylor

 

摘要:

Kaplansky [2] proved that if P is a projective module, then every f.g. submodule of P is contained in a finitely generated direct summand iff P is the direct sum of f.g. projectives. We show that in order that all injectives have the dual property to the above statement,, for ach pair of simples (S1, S2), Hom(Ŝ1,Ŝ2) must be an Artinian and Noet. i.ian End(Ŝ1) module wherei. is the injective hull of Ŝi. This leads to a study of universally cotorsionless modules.

 

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