The History of Contrast Argument

Compiling “The History of Logics in the Islamic Period” needs much historical research on minor issues of that logic. The present inquiry focuses on one of them: proving the contradiction of “general negative” through a contrast between subject and its predicate (contrast argument), initiated by Theophrastus and Eudemus. This initiation reached Farabi and Ibn Sina in Translation Movement through Iskandar Afrudisi’s Fī In’ikās al-Muqaddamāt (translated by Abu ‘Uthman of Damascus). The contrast argument has experienced many vicissitudes throughout history of logics in Islam. We have discussed this fact in detail in the present article.