Syllogistic fallacy

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Syllogistic fallacies are formal fallacies that occur in syllogisms. They include:

Any syllogism type (other than polysyllogism and disjunctive):

fallacy of four terms

Occurring in categorical syllogisms:

related to affirmative or negative premises:
existential fallacy
fallacy of the undistributed middle
illicit major
illicit minor
fallacy of necessity

Occurring in disjunctive syllogisms:

affirming a disjunct

Occurring in statistical syllogisms (dicto simpliciter fallacies):

See also[edit]

External links[edit]

Fallacy files: Syllogistic fallacy
Online Syllogistic Machine An interactive syllogistic machine for exploring all the fallacies, figures, terms, and modes of syllogisms.

v t e Formal fallacies

Masked man fallacy

In propositional logic	Affirming a disjunct Affirming the consequent Denying the antecedent Argument from fallacy False dilemma

In quantificational logic	Existential fallacy Illicit conversion Proof by example Quantifier shift

Syllogistic fallacy	Affirmative conclusion from a negative premise Exclusive premises Existential Necessity Four-term fallacy Illicit major Illicit minor Negative conclusion from affirmative premises Undistributed middle

Other types of formal fallacy List of fallacies

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