Is the category of short exact sequences of abelian groups abelian?
81762
Colimits in that category of short exact sequences of abelian groups
54127
Categories with $C \times 0 \cong 0$ for all objects $C$
18415
Direct sum of Abelian groups and Isomorphism
85222
Direct sum of finitely-many non-abelian groups
37570
$M + N$ and $M \cap N$ are finitely generated $A$-modules implies $M$ and $N$ finitely generated using exact sequences
97565
Quotient group $G/H$ is abelian iff $[G,G] \subseteq H$
61616
category of linear maps
110110
Mitchell's Embedding Theorem for not-necessarily-small categories
51786
Is every additive monofunctor between abelian categories left exact?
133664
When the automorphism group is trivial......
112577
$\hom (M, \coprod_i N_i) \cong \bigoplus_i \hom (M, N_i)$ in abelian categories when $M$ is simple?
87882
If $N \lhd G$ is abelian and $G/N$ is abelian then $G$ is abelian
43783
Abelian group (Commutative group)
152678
I've read that abelian categories can naturally be enriched in $\mathbf{Ab}.$ How does this actually work?
27524
Map from real numbers to real numbers as abelian groups
122559
Some questions on abelian category
143550
Order of product of two elements in an abelian group