عنوان مقاله [English]
Undoubtedly, the exact understanding of the conditional disjunctives of old logic, has a profound effect on the proper analysis of the Islamic philosophy propositions and the inferences of the Avicenna,s logic. This paper, with a brief Analyse of All sorts of disjunctives from the standpoint of some seventeenth-century logicians, tries to elaborate and explain the intellectual system governing disjunctive propositions. This study, by showing the inefficiency of the" katibi logic" True and false conditions interpretation of disjunctive propositions, suggests that the strategy of " Eleventh intellect"(Aql Hadi Usher) is a precise, coherent, and comprehensive strategy. Hence, a new interpretation from Khajeh Nasir al-Din Tusi's text will be expressed about the conditions of the constructors propositions of disjunctives: An interpretation that is consistent not only with many of the Khajeh,s inferences, but also has the capacity to symbolize disjunctives in the field of new logic. In the following, we examine the Equaling consequences of mutually exclusive and Non-exclusive particular disjunctives, derived from the particular disjunctive definition of Muslim logicians. The intrepretation of "negative disjunctive to negation of disjunction" is one of the other findings of this article, and it became important becuase Lutfollah Nahwi in Correcting the formula of Rashir, introduces the negative disjunctive image as disjunction of negation.