Adjoint Functors induce Natural Transformations
128229
Proving that the transformation obtained from an adjoint pair is natural
14830
A transformation of F[x]
8805
Bounded linear operators that commute with translation
33868
A transformation between two free group actions.
42941
Pair of adjoint functors and showing that two certain maps are inverses
109649
idempotents acting as local identities
61616
category of linear maps
143648
Reconciling different definitions of left-exact functor
5803
Produce an explicit bijection between rationals and naturals?
157054
Long exact sequence in homology: naturality=functoriality?
111689
Surjective, but not injective endomorphism
121945
Monomorphisms and Epimorphisms in the category of small categories
25260
Extension of a morphism $k^*\rightarrow X$ to $\mathbb{P}^1\rightarrow \overline{X}$
41261
Functors that aren't continuous/smooth
85193
direct product commutes with tensor product?
51245
$A \longrightarrow \text{Im} f$ is an epimorphism and a cokernel of ker $f \longrightarrow A$ in every abelian category
80306
Hartshorne's weird definition of right derived functors and prop. III 2.6