contraposition

Noun

Meaning

A placing over against; opposite position.

A so-called immediate inference which consists in denying the original subject of the contradictory predicate; e.g.: Every S is P; therefore, no Not-P is S.

Source: Webster's dictionary

Synonyms

counteraction back difference contrast conflict resistance opposition opposite comparison challenge reverse opposing inverse disagreement contradiction
Show all synonyms

Related terms

implication contrapositive contrapose

Phrases with the word

proof by contraposition

Examples

Related terms Contraposition and transposition Contraposition is a logically valid rule of inference that allows the creation of a new proposition from the negation and reordering of an existing one. Source: Internet

Transposition is exactly the same thing as Contraposition, described in a different language. Source: Internet

Close letter words and terms

contraponend contrapose contraposed contrapositive contrapositive proof contrapositively