Gauge theories are also important in explaining gravitation in the theory of general relativity. Wormholes are a hypothetical warped spacetime permitted by the Einstein field equations of general relativity. Albert Einstein's general relativity and the cosmological principle. Penrose has made contributions to the mathematical physics of general relativity and cosmology. This would violate the theory of relativity. Octonions have applications in fields such as string theory, special relativity and quantum logic. The group is the Lorentz group that is fundamental in relativity theory. LQG is an attempt to merge and adapt standard quantum mechanics and standard general relativity. Several relativistic effects are directly related to the relativity of direction. Black holes are predicted by the theory of general relativity. Reference frames play a crucial role in relativity theory. Such geodesics are the generalization of the invariance of lightspeed in special relativity. Amal Kumar Raychaudhuri was a physicist, known for his research in general relativity and cosmology. The Center for Computational Relativity and Gravitation was founded in 2007. This means that both choices are in accord with the two postulates of relativity.