Linked from
The 46 pages that link to Gauge theory, each with the reason it gives.
Lie groupRelated: Gauge symmetries are often modeled by Lie groups such as U(1) and SU(3).
Lie algebraRelated: Gauge fields and their interactions are organized by Lie algebras.
Sophus LieRelated: Lie groups provide the symmetry groups underlying many gauge theories.
SupergravityRelated: Supergravity treats local supersymmetry as a gauge symmetry.
BraneRelated: Gauge theories can emerge from open-string modes living on stacks of D-branes.