Proof
Proposition | Derivation |
---|---|
Given | |
Given | |
Transposition | |
Law of the Excluded Middle | |
Conjunction | |
Constructive dilemma | |
Material implication |
Read more about this topic: Hypothetical Syllogism
Famous quotes containing the word proof:
“A short letter to a distant friend is, in my opinion, an insult like that of a slight bow or cursory salutationa proof of unwillingness to do much, even where there is a necessity of doing something.”
—Samuel Johnson (17091784)
“The chief contribution of Protestantism to human thought is its massive proof that God is a bore.”
—H.L. (Henry Lewis)
“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)