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Traditional Logic I Chapter V - Memoria Press

Traditional Logic I Chapter V - Memoria Press

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Examples of I StatementsSome men are mortalSome cars are fastSome boys are rudeSome girls are prettySlide 5-9negoThe E statement denies somethingabout all S, namely P.No S is PSlide 5-10


Examples of EStatementsNo men are mortalNo cars are fastNo boys are rudeNo girls are prettySlide 5-11negoThe O statement denies somethingabout some S’s, namely P.Some S is not PSlide 5-12


Examples of O StatementsSome men are not mortalSome cars are not fastSome boys are not rudeSome girls are not prettySlide 5-13The Four Elements of aPropositionQuantifierSubject-termPredicate-termCopulaSlide 5-14


The Four Kinds ofQuantifierAllSomeNoSome … notSlide 5-15The Quality of aPropositionaffirmativenegativeSlide 5-16


Affirmative PropositionsA: All men are mortalI: Some men are happySlide 5-17Negative PropositionsE: No men are godsO: Some men are not happySlide 5-18


The Quantity ofPropositionsUniversalParticularSlide 5-19Universal PropositionsA: All men are mortalE: No men are godsSlide 5-20


Quantity and Quality ofthe Four CategoricalStatementsQualityAffirmative NegativeUniversal A EQuantityParticular I OSlide 5-21Particular PropositionsI: Some men are happyO: Some men are not happySlide 5-22


Quantity and Quality ofthe Four CategoricalStatementsQualityAffirmative NegativeUniversal A EQuantityParticular I OSlide 5-23DistinguishingUniversalStatementsThe general rule is that, instatements that do not contain aquantifier, all is intended unlesssome is clearly indicated.Slide 5-24


DistinguishingUniversalStatementsFrogs are ugly = All frogs are uglyBUTMen are setting sail = Some menare setting sailSlide 5-25Terms in whichthe subject is anindividual areuniversalSocrates is a manSlide 5-26


The Four <strong>Logic</strong>al StatementsThe four logical statementsThe quantifierQualityQuantityDistinguishing universal statementsSlide 5-27

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