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
E=MC² (Mariah Carey album) States for the third most number one albums for a female artist, behind Janet Jackson with seven, Madonna with eight and Barbra Streisand's nine chart toppers. In its second week, the album remained at number one on the albums chart, with 182,000 copies sold. "E=MC²" became Carey's first album to spend two straight weeks at number one since 1995's "Daydream", although "The Emancipation of Mimi" (2005) spent two non-consecutive weeks at the top spot. On "Billboard"s Top R&B/Hip-Hop Albums chart, "E=MC²" debuted at number one, and spent forty-seven weeks fluctuating within the top 100. The album was certified Platinum by