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quod erat demonstrandum

[ kwawd e-raht dey-mawn-strahn-doom; English kwod er-uht dem-uhn-stran-duhm ]

Latin.
  1. which was to be shown or demonstrated.


quod erat demonstrandum

/ ˈkwɒd ˈɛræt ˌdɛmənˈstrændʊm /

(no translation)

  1. (at the conclusion of a proof, esp of a theorem in Euclidean geometry) which was to be proved QED
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

quod erat demonstrandum

  1. A phrase used to signal that a proof has just been completed. From Latin , meaning “that which was to be demonstrated.â€
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Example Sentences

Examples have not been reviewed.

He might usefully have concluded his column with the letters we had to put next to solved mathematical equations: QED — quod erat demonstrandum — just to prove his point.

From

At one point, he quotes approvingly a passage from Mein Kampf on how “Marxism itself systematically plans to hand the world over to the Jewsâ€, and then insists that “Well, you can’t argue with logic of that calibre. No: quod erat demonstrandum. Next question, please.â€

From

QED: quod erat demonstrandum, Latin for “which was to be demonstrated or proved.â€

From

“Burning Bush†joins the ranks of other recent films from the former Eastern Bloc — like “Ida†from Poland, “Quod Erat Demonstrandum†from Romania, “Barbara†from Germany — that try to grasp, with the benefit of hindsight but without too much ex post facto gloating, the logic of Communist dictatorship.

From

Queen's Counsel; Queen's College. q.d., quasi dicat=As if he should say. q.e., quod est=Which is. q.e.d., quod erat demonstrandum=Which was to be demonstrated. q.e.f., quod erat faciendum=Which was to be done. q.e.i, quod erat inveniendum=Which was to be found out. q.l., quantum libet=As much as you please.

From

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