Biquaternion Lorentz transformation
In special relativity, a biquaternion Lorentz transformation is formulation of the Lorentz transformation using biquaternions. == Lorentz transformation == In special relativity, a Lorentz transformation is a real linear transformation of the spacetime cartesian coordinates t {\displaystyle t} , x {\displaystyle x} , y {\displaystyle y} , z {\displaystyle z} that preserves the space time interval squared of Minkowski space-time.
Source: Wikipedia — Biquaternion Lorentz transformation (CC BY-SA 4.0)