Comparative Studies in Logic
Alireza Ghadrdan; Mohammad Karimi Lasaki
Abstract
The relationship between term-subject and subject in the attrebutive theorem is (‘عقدالوضع’-Aghd Al-Vaz). According to Al-Razi pruport, the modal of that relationship in Al-farabi’s viewpoint is contingency but Al-Tousi says Al-Farabi’s viewpoint is possibility modal. ...
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The relationship between term-subject and subject in the attrebutive theorem is (‘عقدالوضع’-Aghd Al-Vaz). According to Al-Razi pruport, the modal of that relationship in Al-farabi’s viewpoint is contingency but Al-Tousi says Al-Farabi’s viewpoint is possibility modal. So at last, two of them don’t accept Al-Farabi’s holistic view. On the other hand both of them say that Avicenna, however, accepts actuality modal for ‘Aghd Al-Vaz’ in every theorem and this is the true modal. So Al-Farabi doesn’t talk about the modal of Aghd Al-Vad completely but it is understood that he looks at the relationship as a kind of theorem which accepts modals. Therefore, Avicenna doesn’t accept actuality modal for all theorems. So in this article, first of all we are going to check that possibility modal and contingency modal as a modal of Aghd Al-Vaz is accepted by both Al-Farabi and Avicenna; in the second step we are going to show that the critic of Al-Razi and Al-Tousi in Al-Farbi is not seemed true.
