Darapti

Meanings

1. 1
   noun

   in traditional logic, the AAI mood of the third figure: two universal affirmative premises followed by a particular affirmative conclusion, valid only when the middle-term class is assumed to have at least one member

   The argument is in Darapti, so its conclusion requires an existential assumption about the middle term.

A medieval mnemonic name traditionally associated with Petrus Hispanus, or Peter of Spain. Its three vowels encode the proposition types A-A-I: two universal affirmatives and a particular affirmative. The initial D points to reduction to Darii, while p directs conversion per accidens of the minor premise.

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