Proof
Proposition | Derivation |
---|---|
Given | |
Given | |
Material implication | |
Modus ponens |
Proposition | Derivation |
---|---|
Given | |
Given | |
Material implication | |
Transposition | |
Modus ponens |
Read more about this topic: Disjunctive Syllogism
Famous quotes containing the word proof:
“a meek humble Man of modest sense,
Who preaching peace does practice continence;
Whose pious lifes a proof he does believe,
Mysterious truths, which no Man can conceive.”
—John Wilmot, 2d Earl Of Rochester (16471680)
“It comes to pass oft that a terrible oath, with a swaggering accent sharply twanged off, gives manhood more approbation than ever proof itself would have earned him.”
—William Shakespeare (15641616)
“If some books are deemed most baneful and their sale forbid, how, then, with deadlier facts, not dreams of doting men? Those whom books will hurt will not be proof against events. Events, not books, should be forbid.”
—Herman Melville (18191891)