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Gorenstein injective and projective modules and actions of finite-dimensional Hopf algebras

✍ Scribed by Juan Antonio López-Ramos

Book ID
107382391
Publisher
Springer Netherlands
Year
2008
Tongue
English
Weight
208 KB
Volume
46
Category
Article
ISSN
0004-2080

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Envelopes and Covers by Modules of Finit
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✍ S.Tempest Aldrich; Edgar E. Enochs; Overtoun M.G. Jenda; Luis Oyonarte 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 115 KB

In this paper, we study the existence of ⊥ -envelopes, -envelopes, ⊥ -envelopes, -covers, and -covers where and denote the classes of modules of injective and projective dimension less than or equal to a natural number n, respectively. We prove that over any ring R, special ⊥ -preenvelopes and speci