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Formal syllogistic fallacies Issue1 #130701 Syllogistic fallacies – logical fallacies that occur in syllogisms.

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Fallacies »FallaciesFallacies☜A fallacy is incorrect argumentation in logic and rhetoric resulting in a lack of validity, or more generally, a lack of soundness – and, where applicable, you can use Pointer cross-relations from ideas on other maps to indicate that the idea is fallacious (and why). ☜F1CEB7

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Formal syllogistic fallaciesFormal syllogistic fallacies☜Syllogistic fallacies – logical fallacies that occur in syllogisms.☜FFB597

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Affirmative conclusion from a negative premise »Affirmative conclusion from a negative premiseAffirmative conclusion from a negative premise☜Affirmative conclusion from a negative premise (illicit negative) – when a categorical syllogism has a positive conclusion, but at least one negative premise.☜59C6EF

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Fallacy of exclusive premises »Fallacy of exclusive premisesFallacy of exclusive premises☜Fallacy of exclusive premises – a categorical syllogism that is invalid because both of its premises are negative.☜59C6EF

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Fallacy of four terms »Fallacy of four termsFallacy of four terms☜Fallacy of four terms (quaternio terminorum) – a categorical syllogism that has four terms.☜59C6EF

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Fallacy of the undistributed middle »Fallacy of the undistributed middleFallacy of the undistributed middle☜Fallacy of the undistributed middle – the middle term in a categorical syllogism is not distributed.☜59C6EF

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Illicit major »Illicit majorIllicit major☜Illicit major – a categorical syllogism that is invalid because its major term is not distributed in the major premise but distributed in the conclusion.☜59C6EF

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Illicit minor »Illicit minorIllicit minor☜Illicit minor – a categorical syllogism that is invalid because its minor term is not distributed in the minor premise but distributed in the conclusion.☜59C6EF

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Negative conclusion from affirmative premises »Negative conclusion from affirmative premisesNegative conclusion from affirmative premises☜Negative conclusion from affirmative premises (illicit affirmative) – when a categorical syllogism has a negative conclusion but affirmative premises.☜59C6EF

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Entered by:- David Price
NodeID: #130701
Node type: Issue
Entry date (GMT): 12/6/2011 7:46:00 PM
Last edit date (GMT): 12/6/2011 7:46:00 PM
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Average rating: 5 by 1 users

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