Subject
Algebra and Number Theory
Reference17 articles.
1. Rings and Categories of Modules
2. Bican , L. ( 2004 ).Torsionfree Precovers. Contributions to general algebra 15, Proceedings of the Klagenfurt Conference 2003 (AAA 66) . Vol. 15 . Klagenfurt : Verlag Johannes Heyn , pp. 1 – 6 .
3. On torsionfree classes which are not precover classes