Covers and envelopes by submodules or quotient-modules

HIGHLIGHTS

• who: Yuedi Zeng from the Department of Mathematics and Finance, Applied Mathematics Key Laboratory, Putian University, Putian, China have published the article: Covers and Envelopes by Submodules or Quotient-Modules, in the Journal: Journal of Mathematics of 15/04/2023

SUMMARY

Note that the class of submodules of injective left R-modules or the class of quotient-modules of projective left R-modules is the class of left R-modules. Let X be a class of left R-modules and S the class of submodules of X. Te following are equivalent: Te class . . .

 



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