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Relative Projectivity and Injectivity Classes Determined by Simple Modules

✍ Scribed by Fuller, K. R.

Book ID
120097590
Publisher
Oxford University Press
Year
1972
Tongue
English
Weight
235 KB
Volume
s2-5
Category
Article
ISSN
0024-6107

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πŸ“œ SIMILAR VOLUMES

Envelopes and Covers by Modules of Finit
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✍ S.Tempest Aldrich; Edgar E. Enochs; Overtoun M.G. Jenda; Luis Oyonarte πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 115 KB

In this paper, we study the existence of βŠ₯ -envelopes, -envelopes, βŠ₯ -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 βŠ₯ -preenvelopes and speci