Proof
| Proposition | Derivation |
|---|---|
| Given | |
| Material implication | |
| Commutavity | |
| Material implication |
Read more about this topic: Transposition (logic)
Famous quotes containing the word proof:
“The moment a man begins to talk about technique that’s proof that he is fresh out of ideas.”
—Raymond Chandler (1888–1959)
“There are some persons in this world, who, unable to give better proof of being wise, take a strange delight in showing what they think they have sagaciously read in mankind by uncharitable suspicions of them.”
—Herman Melville (1819–1891)
“There is no better proof of a man’s being truly good than his desiring to be constantly under the observation of good men.”
—François, Duc De La Rochefoucauld (1613–1680)