On Envelopes and Covers in the Category of Short Exact Sequences
L Mao - Bulletin of the Malaysian Mathematical Sciences …, 2020 - Springer
We investigate preenvelopes and precovers in the category _ RE RE of short exact
sequences of left R-modules. Let CC be a class of left R-modules. We prove that:(1) A_ 1 …
sequences of left R-modules. Let CC be a class of left R-modules. We prove that:(1) A_ 1 …
On Envelopes and Covers in the Category of Short Exact Sequences.
L Mao - Bulletin of the Malaysian Mathematical Sciences …, 2020 - search.ebscohost.com
We investigate preenvelopes and precovers in the category RE of short exact sequences of
left R-modules. Let C be a class of left R-modules. We prove that:(1) A 1→ δ 1 B 1 is a C …
left R-modules. Let C be a class of left R-modules. We prove that:(1) A 1→ δ 1 B 1 is a C …