Covers and Envelopes in Grothendieck Cat
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S.Tempest Aldrich; Edgar E Enochs; J.R GarcΔ±Μa Rozas; Luis Oyonarte
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Article
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2001
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Elsevier Science
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English
β 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