Disjunction And Existence Properties
In mathematical logic, the disjunction property is satisfied by a logic if whenever a sentence
is a theorem, then either is a theorem, or is a theorem.
The existence property or witness property is satisfied by a logic if whenever a sentence
is a theorem, then there is some term for which is a theorem.
Read more about Disjunction And Existence Properties: Background, Existence Property Implies Disjunction Property, Disjunction Property Implies Existence Property
Famous quotes containing the words existence and/or properties:
“It would strike me as ridiculous to want to doubt the existence of Napoleon; but if someone doubted the existence of the earth 150 years ago, perhaps I should be more willing to listen, for now he is doubting our whole system of evidence.”
—Ludwig Wittgenstein (1889–1951)
“The reason why men enter into society, is the preservation of their property; and the end why they choose and authorize a legislative, is, that there may be laws made, and rules set, as guards and fences to the properties of all the members of the society: to limit the power, and moderate the dominion, of every part and member of the society.”
—John Locke (1632–1704)