Syllogistic fallacy

From Wikipedia, the free encyclopedia

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

Any syllogism type (other than polysyllogism and disjunctive):

• fallacy of four terms

Occurring in categorical syllogisms:

• affirmative conclusion from a negative premise
• existential fallacy
• fallacy of exclusive premises
• 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):

• accident
• converse accident

[edit] External links

• Fallacy files: Syllogistic fallacy

v • d • e Formal fallacies Argument from fallacy • Fallacy of modal logic • Masked man fallacy • Appeal to probability • Bare assertion fallacy Fallacy of propositional logic: Affirming a disjunct • Affirming the consequent • False dilemma • Denying the antecedent Fallacy of quantificational logic: Existential fallacy • Illicit Conversion • Proof by example • Quantifier shift Syllogistic fallacy: Affirmative conclusion from a negative premise • Exclusive premises • Necessity • Four-term Fallacy • Illicit major • Illicit minor • Undistributed middle Other types of fallacy