QED

QED can mean several different things:

• Q.E.D. Latin Quod erat demonstrandum, used at the end of mathematical proofs
• QED (text editor) computer program
• QED (book) (1985), by Richard Feynman
• QED (play), by Peter Parnell about Richard Feynman
• QED (TV documentary series) a British science documentary series
• QED (TV series), A 1982 short-lived adventure series starring Sam Waterston
• Q.E.D. (manga), a Japanese detective comic by Katou Motohiro
• QED project, intended to construct a formalized database of all mathematical knowledge
• Quantum electrodynamics, a field of physics
• Quantum Effect Devices, a maker of MIPS architecture microprocessors
• Quantum Explosion Dynamo, an object in the computer game Commander Keen
• Q.E.D. (1903), by Gertrude Stein, published as Things As They Are (1973)