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- The phrase originates from ancient Greek mathematics and philosophy, where demonstrating conclusions through rigorous proof was essential.
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Where did quod erat demonstrandum come from?
Where did QED come from?
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The phrase quod erat demonstrandum is a translation into Latin from the Greek ὅπερ ἔδει δεῖξαι (hoper edei deixai; abbreviated as ΟΕΔ). The meaning of the Latin phrase is "that [thing] which was to be demonstrated" (with demonstrandum in the gerundive).
The earliest known use of the phrase quod erat demonstrandum is in the early 1600s. OED's earliest evidence for quod erat demonstrandum is from 1614, in the writing of William Bedwell, Arabist and mathematician.
Latin: Quod erat faciendum, originating from the Greek geometers' closing Greek, Ancient (to 1453);: ὅπερ ἔδει ποιῆσαι, meaning "which had to be done". Because of the difference in meaning, the two phrases should not be confused.
The Crossword Solver found 30 answers to "___ erat demonstrandum, QED (4)", 4 letters crossword clue. The Crossword Solver finds answers to classic crosswords and cryptic crossword puzzles. Enter the length or pattern for better results.
Q.E.D. These initials stand for the Latin quod erat demonstrandum meaning, ‘what was to be demonstrated’. It was coined by Euclid in Greek c. 300 BC but it is better known in its Latin translation.
Oct 8, 2018 · Where does Q.E.D. come from? quickmeme.com. The Latin quod erat demonstrandum literally means “what was to be demonstrated.” It is actually a transliteration of a phrase ancient Greek mathematicians placed at the end of logical proofs—a kind of stamp that says “I proved what I set out to.
The phrase originates from ancient Greek mathematics and philosophy, where demonstrating conclusions through rigorous proof was essential. In modern usage, Q.E.D. is still seen in academic writing, especially in mathematics, to affirm the validity of a proof.
