Axioms of Abelian Category
74617
Equivalent conditions for a preabelian category to be abelian
124003
Composition of adjoint functors
117131
Canonical Isomorphism Between $\mathbf{V}$ and $(\mathbf{V}^*)^*$
53634
Sequences or 'chains' of adjoint functors
83744
is there a property of a category that is preserved by category isomorphism, but not equivalence?
43711
Categorical Quotient and group actions
123242
Half exact functor which is neither right exact nor left exact
27400
About Baire's Category Theorem(BCT)
86823
proof verification: If $f:G \rightarrow H$ is group homomorphism, and $H$ is abelian, then $G$ is abelian
63574
small limits in the pointed category of a category with all small limits
60208
Proof of property of abelian group
94246
Category-theoretic limit related to topological limit?
46263
Automorphisms of infinite abelian groups
34300
"Natural" categories where monomorphisms differ from injective morphisms
102899
Category theory with objects as logical expressions over $\{\vee,\wedge,\neg\}$ and morphisms as?
142219
Does the splitting lemma hold without the axiom of choice?
3907
Abelian quotient group