Q.E.D.

"Q.E.D. or QED (sometimes italicized) is an initialism of the Latin phrase "quod erat demonstrandum", literally meaning "what was to be shown". Traditionally, the abbreviation is placed at the end of a mathematical proof or philosophical argument in print publications to indicate that the proof or the argument is complete, and hence is used with the meaning "thus it has been demonstrated"."

- Wikipedia

On All The Tropes, Q.E.D. or QED could refer to:

Anime and Manga

 * Q.E.D. (manga), a series by Motohiro Katou that ran from 1997 to 2014

Live-Action TV

 * Q.E.D. (American TV series), a CBS period adventure series that ran for six episodes in 1982
 * Q.E.D. (British TV series), a BBC science documentary series that ran from 1982 to 1999

Music

 * QED (band), an Australian New Wave trio from the 1980s

Theatre

 * QED (play), a play by Peter Parnell that premiered in 2001

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