Lorentz group - WikipediaSeveral other groups are either homomorphic or isomorphic to the restricted Lorentz group SO+(1, 3). These homomorphisms play a key role in explaining various phenomena in physics. The special linear group SL(2, C) is a double covering of the restricted Lorentz group. This relationship is widely used to express the Lorentz invariance of the Dirac equation and the covariance of spinors. In other wo
