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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).
What led Aristotle to invent this system? We would expect systematic logic to emerge at a time when importance was placed on arguing successfully, and when it made a difference whether an argument was valid. Early fourth-century B.C. Athens was such a place, in a number of ways.
Etymology and early use. 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).
Quod erat demonstrandum. Harold p. fawcett, Ohio State University, Columbus, Ohio. and the intellectual glow which its study engenders arises through an insight into mathematical patterns and processes. It happened in October, 1908, and it happened in a small school located in Middle Sackville, New Brunswick, Can ada.
Sep 28, 2017 · Origin of Q.E.D.: 1760, abbreviation of Latin quod erat demonstrandum "which was to be demonstrated." ... See more.
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.
Nov 21, 2023 · In Quod erat demonstrandum the sense of necessity can be attributed completely to the gerundive. As in our case, often the gerundive is coupled with the verb esse (to be) - most famously in Censeo Carthaginem esse delendam ("I think Carthage must be destroyed").
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.
