If two events occur at the same spatial point but not simultaneously in one inertial frame, prove that the temporal order of these events is the same in all inertial frames. Prove also that in all other frames the temporal interval △t between the two events is larger than in the first frame, and that there are no limits on the events’ spatial or temporal separation in the other frames. Give two proofs of these results, one algebraic and the other via spacetime diagrams.