The inde nite special orthogonal group S-O four-comma-one replaces the Poincaré (pwahn-kah-ray) group as the symmetry group of spacetime in an alternative theory of special relativity named for this scientist.
This scientist is the namesake of a cosmological horizon that is equivalent to the event horizon of a Nariai (nah-ree-"eye") black hole. The inde nite special orthogonal group S-O four-comma-one replaces the Poincaré (pwahn-kah-ray) group as the symmetry group of spacetime in an alternative theory of special relativity named for this scientist. He is the namesake of the maximally symmetric vacuum solution of the Einstein  eld equations that has a negative cosmological constant. Juan Maldacena showed that a gravitational theory on that type of space named for this scientist corresponds to a conformal  eld theory de ned on its boundary. In general relativity, the presence of a non-rotating central mass requires a correction to the angular momentum of an orbiting body that is named for this scientist and is contrasted with frame dragging. For 10 points, identify this Dutch scientist who predicted the geodetic e fect, which is also known as his namesake precession.
This scientist is the namesake of a cosmological horizon that is equivalent to the event horizon of a Nariai (nah-ree-"eye") black hole.
Willem de Sitter [accept de Sitter horizon or de Sitter invariant special relativity or anti-de Sitter space or de Sitter precession]