Linked from
The 8 pages that link to Cayley's theorem, each with the reason it gives.
PermutationRelated: It shows that abstract group elements can always be represented by permutations.
Permutation groupRelated: It shows that abstract groups can all be represented through permutations.
IsomorphismRelated: It represents abstract group structure concretely through permutations.
Mathematical structureBroader topic: It realizes an abstract group structure through permutations.