Linked from

The 3 pages that link to Cayley's formula, each with the reason it gives.

• Graph theoryRelated: Nineteenth-century work on trees expanded graph theory beyond its initial bridge problem.

• Kirchhoff's theoremBroader topic: Applying Kirchhoff’s theorem to a complete graph derives this enumeration.

• Abel's binomial theoremRelated: Tree-counting identities provide a prominent setting for Abel-style polynomial expressions.