Hypothetical Syllogism - Proof

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 salutation—a proof of unwillingness to do much, even where there is a necessity of doing something.
    Samuel Johnson (1709–1784)

    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 (1564–1616)