Debates on the Position of the Book of Categories in Peripatetic Logic

Discussions have been continued among philosophers in the place and position of the Book of Categories in logic. Ibn Khaldun said that Book of Categories had ejected from logic in period of later logicians. Ibn Sina did not approve of studying categories in logic. The most appropriate interpretations in the Book of Categories is al-Farabi’s interpretations. In this article most especially these three thinkers’ opinions and assessments on this problem will be try to describe.