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Q.E.D.

Q.E.D. or QED is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally, it states "what was to be shown".[1] Traditionally, the abbreviation is placed at the end of mathematical proofs and philosophical arguments in print publications, to indicate that the proof or the argument is complete.

  1. ^ "Definition of QUOD ERAT DEMONSTRANDUM". www.merriam-webster.com. Retrieved 2017-09-03.

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