# Q.e.d.

**URL:** <https://boards.straightdope.com/t/q-e-d/233348>\
**Category:** Factual Questions\
**Created:** [March 9, 2004, 9:14pm UTC](https://boards.straightdope.com/t/q-e-d/233348 "2004-03-09T21:14:45Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![lk1932](https://avatars.discourse-cdn.com/v4/letter/l/aeb1de/32.png) [@lk1932](https://boards.straightdope.com/u/lk1932)\
**Post date:** [March 9, 2004, 9:14pm UTC](https://boards.straightdope.com/t/q-e-d/233348/1 "2004-03-09T21:14:45Z")

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Thanks for the fast response of my question.

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**Author:** ![Madness2MyMethod](https://avatars.discourse-cdn.com/v4/letter/m/4af34b/32.png) [@Madness2MyMethod](https://boards.straightdope.com/u/Madness2MyMethod)\
**Post date:** [March 9, 2004, 9:58pm UTC](https://boards.straightdope.com/t/q-e-d/233348/2 "2004-03-09T21:58:53Z")

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> [@lk1932](#):
>
> Thanks for the fast response of my question.

maybe someone can answer my question before this thread is deleted:

What is Q.E.D. ? What does it stand for? I realize a certain staff reporter goes by Q.E.D. …

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**Author:** ![GorillaMan](https://avatars.discourse-cdn.com/v4/letter/g/50afbb/32.png) [@GorillaMan](https://boards.straightdope.com/u/GorillaMan)\
**Post date:** [March 9, 2004, 10:05pm UTC](https://boards.straightdope.com/t/q-e-d/233348/3 "2004-03-09T22:05:35Z")

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“Quod erat demonstrandum” - _which was to be demonstrated_.

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**Author:** ![Gyrate](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/gyrate/32/3588_2.png) [@Gyrate](https://boards.straightdope.com/u/Gyrate)\
**Post date:** [March 9, 2004, 10:10pm UTC](https://boards.straightdope.com/t/q-e-d/233348/4 "2004-03-09T22:10:18Z")

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More specifically, it denotes that whatever point you were trying to prove logically has been reached.

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**Author:** ![JS\_Princeton](https://avatars.discourse-cdn.com/v4/letter/j/57b2e6/32.png) [@JS\_Princeton](https://boards.straightdope.com/u/JS_Princeton)\
**Post date:** [March 9, 2004, 11:37pm UTC](https://boards.straightdope.com/t/q-e-d/233348/5 "2004-03-09T23:37:10Z")

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…or quantum electrodynamics.

Take your pick.

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [March 10, 2004, 5:25am UTC](https://boards.straightdope.com/t/q-e-d/233348/6 "2004-03-10T05:25:40Z")

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> [@Madness2MyMethod](#):
>
> I realize a certain staff reporter goes by Q.E.D. …

Yes, that would be me. 😃

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**Author:** ![xash](https://avatars.discourse-cdn.com/v4/letter/x/c6cbf5/32.png) [@xash](https://boards.straightdope.com/u/xash)\
**Post date:** [March 10, 2004, 5:38am UTC](https://boards.straightdope.com/t/q-e-d/233348/7 "2004-03-10T05:38:41Z")

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**lk1932** , next time please post your thanks in the original thread itself.

Thank you.

- **xash**  
General Questions Moderator