affirmative proposition

(from the article `logic`) ...Many arguments are composed of premises and conclusions that are stated or could be restated as categorical propositions. Categorical propositions ... Universal affirmative: `Every is an .`Universal negative: `Every is not an ,` or equivalently `No is an .`Particular affirm...
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Affirmative proposition

In traditional logic, propositions A, I were called affirmative, and E, O, negative (see logic, formal, § 4). It is doubtful whether this distinction can be satisfactorily extended to propositions (or even to sentences) generally. -- A.C.
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