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Q.E.D. or QED is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally, it states "what was to be shown". [ 1 ] Traditionally, the abbreviation is placed at the end of mathematical proofs and philosophical arguments in print publications, to indicate that the proof or the argument is ...
quod erat demonstrandum : what was to be demonstrated: The abbreviation is often written at the bottom of a mathematical proof. Sometimes translated loosely into English as "The Five Ws", W.W.W.W.W., which stands for "Which Was What We Wanted". quod erat faciendum (Q.E.F.) which was to be done: Or "which was to be constructed".
quod erat demonstrandum "that which was to be demonstrated" [1] Cited in many texts at the end of a mathematical proof. Example: "At the end of the long proof, the professor exclaimed ' QED! '" q.v. qq.v. quod vide quae vide "which see" Imperative, [1] used after a term or phrase that should be looked up elsewhere in the current document or book.
Q.E.D. (quod erat demonstrandum), used at the end of a mathematical proof; Quantum electrodynamics, a field in particle physics; QED manifesto and project, a database of mathematical knowledge; QED: The Strange Theory of Light and Matter, a 1985 physics book by Richard Feynman
Q.E.D. (Japanese: Q.E.D. 証明終了, Hepburn: Kyūīdī Shōmei Shūryō) is a Japanese manga series written and illustrated by Motohiro Katou.It was serialized in Kodansha's shōnen manga magazines Magazine Great (rebranded Magazine E-no in 2009) and Monthly Shōnen Magazine+ [] from July 1997 to February 2014, with its chapters collected in 50 tankōbon volumes.
quod erat demonstrandum 'which was to be demonstrated' is a calque of ὅπερ ἔδει δεῖξαι (hoper edei deixai) 'what needed to be [shown] has been shown'. [64] similaris 'similar' calques ὁμοιομερής. [65] Many grammatical terms: participium 'participle' from μετοχή, declinationem 'declension' from κλίσις, etc.
A gerundive appears in the phrase quod erat demonstrandum ("which was to be demonstrated"), whose abbreviated form Q.E.D. is often used after the final conclusion of a proof. The motto Nil desperandum 'Nothing is to be despaired at' i.e. 'Never despair'. Based on this the cod Latin Nil illegitimis carborundum 'Don't let the bastards grind you ...
The idea for the project arose in 1993, mainly under the impetus of Robert Boyer.The goals of the project, tentatively named QED project or project QED, were outlined in the QED manifesto, a document first published in 1994, with input from several researchers. [1]