Validity

Bol

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term validity in logic applies to arguments or statements. A logically valid argument is one where the conclusion follows from the premises. An invalid argument is where the conclusion does not follow from the premises. A deductive argument may be valid but not true. In other words, validity is a necessary condition for truth of a deductive syllogism but is not a sufficient condition. An argument is valid if and only if the truth of its premises entails the truth of its conclusion. It would be self-contradictory to affirm the premises and deny the conclusion. The corresponding conditional of a valid argument is a logical truth and the negation of its corresponding conditional is a contradiction. The conclusion is a logical consequence of its premises.

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Pagina's: 76, Paperback, Betascript Publishers