modus ponendo tollens

English

Etymology

Borrowed from Latin modus pōnendō tollens (roughly, “mode where affirming infirms”).

Noun

modus ponendo tollens (uncountable)

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

   1. If P, then non-Q.

   2. P.

   3. Therefore, non-Q.

Hypernyms

• inference rule
• See also Thesaurus:argument form

Related terms

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

Translations

Translations

Anagrams

• modus tollendo ponens