EntityQ4223027· pop 6· linked from 33 articlesPetrov classificationSign in to saveclassification of the possible algebraic symmetries of the Weyl tensor at each point in a Lorentzian manifoldConnectionsgravitational waveEntityeigenvectors and eigenvaluesEntityEinstein field equationsEntityFriedmann–Lemaître–Robertson–Walker metricEntitypseudo-Riemannian manifoldEntitylinearized gravityEntityAlbert EinsteinPersonenergyEntityBlack holeConceptStephen HawkingPersonInternational Standard Book NumberEntityDavid HilbertEntityHenri PoincaréEntityJ. Robert OppenheimerPersonspecial relativityEntitygeneral relativityEntityHendrik LorentzEntityKurt GödelEntitydigital object identifierEntitysymmetryEntityCategoriesDifferential geometryExact solutions in general relativityTensors in general relativity