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Who was the first to propose the theory of Anti-de Sitter space?
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The theory of Anti-de Sitter space was proposed by physicists John Wheeler and Freeman Dyson in the 1960s. The theory describes a space that is similar to our own space, but with a negative cosmological constant. The theory is named after the mathematician and physicist Paul Adrien Maurice Dirac, who first proposed the idea of a negative cosmological constant.