The non-Euclidean planar algebras support kinematic geometries in the plane. For instance, the split-complex number z = eaj can represent a spacetime event one moment into the future of a frame of reference of rapidity a. Furthermore, multiplication by z amounts to a Lorentz boost mapping the frame with rapidity zero to that with rapidity a.
the non-euclidean planar algebras support kinematic geometries in the plane for instance the split-complex number z = eaj can represent a spacetime event one moment into the future of a frame of reference of rapidity a furthermore multiplication by z amounts to a lorentz boost mapping the frame with rapidity zero to that with rapidity a