Q.E.D. is an abbreviation placed at the end of a proof.
It comes from the Latin phrase quod erat démonstrandum which means 'That
which was to be proved'.
Cite this article as:
McAdams, David E. QED. 5/5/2011. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/q/qed.html.
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