A Dictionary of Philosophy, Third Edition
. In traditional formal logic, replacement of a proposition by a logically equivalent one (its converse) having as subject the original predicate (simple conversion). ‘No dogs are cats’ is the converse of ‘No cats are dogs’.
In conversion per accidens the converse is implied by, but does not imply, the original. ‘Some pets are dogs’ is the converse per accidens of ‘All dogs are pets’. Conversion of either type can be validly carried out only on some of the traditional types of proposition.
This is the complete article, containing 83 words
(approx. 1 page at 300 words per page).
View More Summaries on Conversion
