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) (indicating "generally positive reviews") on the website Metacritic, which averages professional reviews into a numerical score. Stephen Thomas Erlewine, senior editor of Allmusic, rated the album three out of five stars, and wrote "it's misleading to judge Mariah based on her new record of possessing the most number one singles, as she's not about longevity, she's about being permanently transient, a characteristic 'E=MC²' captures all too well." "Billboard"s Gary Trust felt that on the album, Carey was in "pristine form", stating, "She's proclaimed emancipation before, but Mariah Carey's never sounded as free as she does on her 10th album. Carey's