Linked from
The 13 pages that link to Alternating group, each with the reason it gives.
PermutationBroader topic: It consists exactly of the permutations with even parity.
Permutation groupBroader topic: It is a fundamental subgroup of the symmetric group.
Symmetric groupBroader topic: It captures the permutations of even parity within Sₙ.
Simple groupBroader topic: Alternating groups of degree at least five are simple.