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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 ...
Various forms of the end-of-proof symbol In mathematics, the tombstone , halmos , end-of-proof , or Q.E.D. symbol "∎" (or " ") is a symbol used to denote the end of a proof , in place of the traditional abbreviation "Q.E.D." for the Latin phrase " quod erat demonstrandum ".
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
The QED manifesto was a proposal for a computer-based database of all mathematical knowledge, strictly formalized and with all proofs having been checked automatically. ( Q.E.D. means quod erat demonstrandum in Latin , meaning "which was to be demonstrated.")
QED: 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 ...
A group of state attorneys general on Thursday sued to halt Elon Musk's efforts to slash federal spending as head of President Donald Trump's new government efficiency agency, escalating the legal ...
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".
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