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SOME COVERS AND ENVELOPES IN THE CHAIN COMPLEX CATEGORY OF R-MODULES

✍ Scribed by WANG, ZHANPING; LIU, ZHONGKUI

Book ID
111878819
Publisher
Australian Mathematical Society
Year
2011
Tongue
English
Weight
199 KB
Volume
90
Category
Article
ISSN
1446-7887

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Covers and Envelopes in Grothendieck Cat
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✍ S.Tempest Aldrich; Edgar E Enochs; J.R Garcı́a Rozas; Luis Oyonarte πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 136 KB

In the general setting of Grothendieck categories with enough projectives, we prove theorems that make possible to restrict the study of the problem of the existence of -covers and envelopes to the study of some properties of the class . We then prove the existence of flat covers and cotorsion envel