. "1923-12-15Z"^^ . "1923Z"^^ . . . . . . . . . . . . . "Dyson, Freeman John"@en . "Freeman Dyson"@en . "Freeman John Dyson FRS (born 15 December 1923) is an English-born American theoretical physicist and mathematician, known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering. Dyson is a member of the Board of Sponsors of the Bulletin of the Atomic Scientists."@en . . "Physicist and mathematician" . . . . . . . . . . . . . . . . . . "Freeman John Dyson"@en . . . . . .