Q.E.D.

Etymology
From, from.

Usage notes
When used to end a mathematical proof, QED is somewhat dated or traditional; modern textbooks often use the graphical symbol ∎ (the halmos or tombstone) instead. Other languages generally use a vernacular abbreviation, such as or.

Translations

 * Aramaic: קמ׳׳ל
 * Chinese:
 * Mandarin: 證畢, 證訖,
 * Czech: c.b.d.
 * Esperanto: KEP
 * Estonian: m.o.t.t
 * Finnish:
 * French:
 * Georgian: რ.დ.გ
 * German: w. z. b. w.
 * Alemannic German: h.x.
 * Greek: Ό.Έ.Δ.
 * Hebrew:, מ.ש.ל.
 * Hindi: इ. सि.
 * Icelandic: þ.s.s.á.
 * Italian:
 * Polish:, c.b.d.u.
 * Portuguese:, QED
 * Russian:
 * Slovak: Č.B.T.D.
 * Spanish: C.Q.D.
 * Swedish: ,
 * Vietnamese:

Noun

 * 1) Some fact or scenario that proves an argument or proposition; a justification.