- Minkowskian quaternion
- кватернион Минковского
English-russian dictionary of physics. 2013.
English-russian dictionary of physics. 2013.
Inversive ring geometry — In mathematics, inversive ring geometry is the extension to the context of associative rings, of the concepts of projective line, homogeneous coordinates, projective transformations, and cross ratio, concepts usually built upon rings that happen… … Wikipedia