| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4664572 | Acta Mathematica Scientia | 2006 | 6 Pages |
Abstract
Let C be a class of R-modules closed under isomorphisms and finite direct sums. It is first shown that the finite direct sum of almost C-precovers is an almost C-precover and the direct sum of an almost C-cover and a weak C-cover is a weak C-cover. Then the notion of almost C-preenvelopes is introduced and studied.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematics (General)
