Quod-erat-demonstrandum meaning

(something) Which was to be proved; which was to be demonstrated.
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Origin of quod-erat-demonstrandum

  • From Latin quod erat dēmonstrandum (“that which was to be proved”), calqued from Ancient Greek ὅπερ ἔδει δεῖξαι (hoper edei deixai, “precisely what was required to be proved”).
    From Wiktionary