modus tollendo ponens

English

Etymology

Borrowed from Latin modus tollendō pōnēns (roughly, “mode where negating confirms”).

Noun

modus tollendo ponens (uncountable)

1. (philosophy, logic) A valid form of argument in which the antecedent of a conditional proposition is negated, thereby entailing the affirmation of the consequent. Modus ponendo tollens has the form:

   1. Either P or Q.

   2. non-P.

   3. Therefore, Q.

   Synonym: disjunctive syllogism

Hypernyms

• inference rule
• See also Thesaurus:argument form

Related terms

• modus ponendo ponens
• modus ponendo tollens
• modus tollendo tollens

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