1. Abbreviation of the Latin phrase "quod erat demonstrandum; literally, "that which was to be demonstrated". Commonly used at the end of mathematical proofs to signify the proof is complete.
2. Modern usage expands it to include the conclusion of any proof and is often used in attempts at ironic humor.
3. Quantum electrodynamics.
2. Modern usage expands it to include the conclusion of any proof and is often used in attempts at ironic humor.
3. Quantum electrodynamics.
1. If A=B and B=C then A=C. Q.E.D.
2. Beckham and Ronaldo move to MLS. MLS attracts more fans and makes more money. More money attracts more quality players. More quality players make USA competitive. USA wins World Cup. Q.E.D.
2. Beckham and Ronaldo move to MLS. MLS attracts more fans and makes more money. More money attracts more quality players. More quality players make USA competitive. USA wins World Cup. Q.E.D.
by Alan the Atheist Alphageek April 30, 2008
by Really Bored July 02, 2005
Formally used at the end of mathematical proofs to indicate their completion, informally to indicate an argument has been won. Literally "Which was to be demonstrated" (not just "which was demonstrated").
by CletusInteruptus April 30, 2008
A word used by intellectuals that, apparently, they are quite sensitive about if you translate incorrectly. Causes redness and itching on mathemeticians when misused.
Bert- "Q.E.D. means "quit earning dough." It's what you do when you decide to become a professor, right?
Professor Hubert, PHD- "I hate you, I hate you, I hate you!"
Professor Hubert, PHD- "I hate you, I hate you, I hate you!"
by Doctor Feltgood May 14, 2008
Certainly an abbreviation of quod erat demonstrandum but after watching, suffering through, proving thousands of proofs, a math major might just say Quite Easily Done.
by MoHare April 30, 2008
Abbreviation of Latin 'Quod Erat Demonstrandum' meaning 'Which was to be demonstrated'. When doing your geometry exam at St Custard's, you might be required to prove that the square on the hypotenuse is equal to the square on the other two sides. When you think you have given the required proof, you put at the end Q.E.D. In other words. 'That's what you asked me to prove, and I've proved it.'
You asked me to prove the existence of God. God is defined as self-existing, that is, not caused. Everything that exists must be the effect of a cause but the first cause of all other effects cannot by definition be the result of a previous cause. That first cause is therefore God. Q.E.D.
by richelxxx May 01, 2008
Abbreviation of Latin 'Quod Erat Demonstrandum' meaning 'Which was to be demonstrated'. When doing your geometry exam at St Custard's, you might be required to prove that the square on the hypotenuse is equal to the square on the other two sides. When you think you have given the required proof, you put at the end Q.E.D. In other words. 'That's what you asked me to prove, and I've proved it.'
You asked me to prove the existence of God. God is defined as self-existing, that is, not caused. Everything that exists must be the effect of a cause but the first cause of all other effects cannot by definition be the result of a previous cause. That first cause is therefore God. Q.E.D.
by richelxxx May 01, 2008