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Formal syllogistic fallacies
Syllogistic fallacies – logical fallacies that occur in syllogisms.
RELATED ARTICLES
Explain
⌅
Fallacies
Fallacies☜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 fallacies
Formal 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 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 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 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 middle☜Fallacy of the undistributed middle – the middle term in a categorical syllogism is not distributed.☜59C6EF
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Illicit major
Illicit 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 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 premises☜Negative conclusion from affirmative premises (illicit affirmative) – when a categorical syllogism has a negative conclusion but affirmative premises.☜59C6EF
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Non sequiturs
Non sequiturs☜A formal fallacy is an error in logic that can be seen in the arguments form without an understanding of the arguments content. All formal fallacies are specific types of non sequiturs.☜FFB597
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Propositional fallacies
Propositional fallacies☜☜FFB597
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Informal fallacies
Informal fallacies☜Informal fallicies – arguments that are fallacious for reasons other than structural (formal) flaws and which usually require examination of the arguments content.☜FFB597
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Faulty generalizations
Faulty generalizations☜Faulty generalizations – reach a conclusion from weak premises. Unlike fallacies of relevance, in fallacies of defective induction, the premises are related to the conclusions yet only weakly buttress the conclusions. A faulty generalization is thus produced. ☜FFB597
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Red herring fallacies
Red herring fallacies☜Red herring – argument given in response to another argument, which is irrelevant and draws attention away from subject of argument.☜FFB597
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Quantificational fallacies
Quantificational fallacies☜☜FFB597
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Conditional or questionable fallacies
Conditional or questionable fallacies☜☜FFB597
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Graph of this discussion
Graph of this discussion☜Click this to see the whole debate, excluding comments, in graphical form☜dcdcdc
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Entered by:-
David Price
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#130701
Node type:
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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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