Is $\mathrm{Aut}$ a functor/invariant?
107091
Taking the automorphism group of a group is not functorial.
111348
Show that $\mathrm{S}_{m} \times \mathbb{N}^{m} \rightarrow \mathbb{N}^{m}$ defines an action of $\mathrm{S}_{m}$ on $\mathbb{N}^{m}$
155828
How do I show that $A$ and $A^T$ are similar, given that the minimal polynomial of $A$ splits over $\mathbb{F}$?
121244
Homomorphisms and automorphisms on polynomial rings
53432
What is the algebraic closure of $\mathbb F_q$?
8554
Proof: $\mathrm{adj}(\mathrm{adj}(A)) = (\mathrm{det}(A))^{n-2} \cdot A$ for $A \in \mathbb{R}^{n\times n}$
25260
Extension of a morphism $k^*\rightarrow X$ to $\mathbb{P}^1\rightarrow \overline{X}$
127886
Artin's lemma and some morphisms.
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$
25383
Morphism between quotient sheaf ($K_{X}/\mathcal{O}_{X}$) and $\bigoplus_{x\in\mathcal{X}}i_{x,*}(K(X)/\mathcal{O}_{X,x})$
26110
Canonical isomorphism between $\mathfrak{so}(3)$ and $\mathbb R^3$ with vector cross product
22297
Normal operator $\Rightarrow$ S invariant implies $S^\perp$ invariant
140503
What properties do natural isomorphisms between functors preserve?
8417
Natural $(R/I)$-module structure for an $R$-module $M$ annihilated by $I$
129674
Is taking projective closure a functor?
136167
Prove that structure $(Q/{0}; =;*)$ has infinite number of automorphisms
127198
What is $\mathbb{C}^{Aut(\mathbb{C}/\mathbb{Q})}$?