modus ponendo tollens
English edit
Etymology edit
Borrowed from Latin modus pōnendō tollens (roughly, “mode where affirming infirms”).
Noun edit
modus ponendo tollens (uncountable)
- (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 edit
- inference rule
- See also Thesaurus:argument form
Related terms edit
Translations edit
Translations