Q.E.D.

Q.E.D. is an initialism of the Latin phrase quod erat demonstrandum, meaning "which is what had to be proven". The phrase is traditionally placed in its abbreviated form at the end of a mathematical proof or philosophical argument when what was specified in the enunciation—and in the setting-out—has been exactly restated as the conclusion of the demonstration. The abbreviation thus signals the completion of the proof.

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). Translating from the Latin into English yields, "what was to be demonstrated"; however, translating the Greek phrase ὅπερ ἔδει δεῖξαι produces a slightly different meaning. Since the verb "δείκνυμι" also means to show or to prove, a better translation from the Greek would read, "The very thing it was required to have shown." The phrase was used by many early Greek mathematicians, including Euclid and Archimedes.

Q.E.D. (manga)

Q.E.D. (Japanese: Q.E.D. 証明終了, Hepburn: Q.E.D. Shomei Shuuryou) is a detective manga, created and produced by Motohiro Katou. Sou Touma is a university graduate who encounters a variety of investigative cases after returning to Japan from the US. He works with his friend, Kana Mizuhara, combining his deductive skills with Mizuhara's social gifts.

Q.E.D. has sold over 3 million copies in Japan and has been adapted as a live-action TV series.

Development

The manga was first serialised in Magazine GREAT in 1997, and continued as a Magazine E-no segment in 2009 after Magazine GREAT's cessation. Currently, Q.E.D. is serialized in Magazine Plus, and, as of October 2014, 49 volumes of tankōbon have been released.

Generally, each volume has two cases, both of which are solved at the end. As of March 2012, there was only one full-length case that had spanned an entire volume which flashbacked to Sou's time studying at MIT in the US.

Plot

Note: This series needs a short summary of the plot as a whole, not just focused on the character info.

Q.E.D. (U.S. TV series)

Q.E.D. is a 1982 adventure television series set in Edwardian England, starring Sam Waterston as Professor Quentin Everett Deverill. The Professor was a scientific detective in the mold of Sherlock Holmes, and the series had a smattering of what would later be called steampunk. In the show, the lead character was known primarily by his initials, Q.E.D; the reference here is that Q.E.D. usually stands for quod erat demonstrandum, a statement signalling the end of a proof. The show aired on the CBS network in the United States, and by a variety of ITV companies in the United Kingdom.

Cast

Episodes