Anti-de Sitter space bell. It might be described as being the "opposite" of the surface of a sphere, which has a positive curvature. General relativity is a theory of the nature of time, space and gravity in which gravity is a curvature of space and time that results from the presence of matter or energy. Energy and mass are equivalent (as expressed in the equation "E" = "mc"), and space and time can be translated into equivalent units based on the speed of light ("c" in the "E" = "mc" equation). A common analogy involves the way that a dip in a flat
Represent (song) Represent (song) "Represent" is the ninth song on Nas' debut album "Illmatic". It is produced by DJ Premier who samples Lee Irwin's "Thief of Baghdad" for the song's beat. The song's minimalistic beat consists of an electric piano sample and bells. Nas raps three verses and performs a spoken dedication to his friends at the track's end, but does not contribute to the chorus. Nas' verses deal with his life in the streets and his criminal ties. One specific lyric was "pulling the Tec out the dresser" was criticized by Jay-Z on his diss song "Takeover." Nas dedicates the song