contraposition

Noun

 * 1)  The statement of the form "if not Q then not P", given the statement "if P then Q".
 * 2) Opposition; contrast.

Translations

 * Catalan: contraposició
 * Czech: obměna
 * Dutch:
 * Finnish: kontrapositio
 * French: ,
 * German: Kontraposition
 * Italian:
 * Polish: kontrapozycja
 * Portuguese:
 * Russian: контрапози́ция
 * Spanish: contraposición

Etymology
From.