Linked from
The 94 pages that link to Special relativity, each with the reason it gives.
Dirac equationNarrower topic: The equation is built to respect relativistic energy and momentum.
KinematicsRelated: It changes how position, time, and velocity relate near the speed of light.
Minkowski spacetimeNarrower topic: Minkowski spacetime is the geometric formulation of this theory.
Hyperbolic functionsRelated: Rapidity parameterizes Lorentz boosts through hyperbolic functions.
ElectrodynamicsRelated: Its spacetime structure is built into relativistic electrodynamics.