EntityQ1139715· pop 11· linked from 155 articlescausal setSign in to savelocally finite partially ordered set, used to model discretized Lorentzian spacetimeConnectionscausal structureEntityreflexive relationEntitypath integralEntitypseudo-Riemannian manifoldEntityChristopher ZeemanEntityAlbert EinsteinPersonBlack holeConceptStephen HawkingPersongravityEntityquantum mechanicsEntityInternational Standard Book NumberEntitygeneral relativityEntityHendrik LorentzEntityWayback MachineEntityMassachusetts Institute of TechnologyEntityBernhard RiemannEntitydigital object identifierEntityInternational Standard Serial NumberEntityspacetimeEntitydark matterEntityCategoriesOrder theoryQuantum gravityTheoretical physics