Abstract

The discussion of the problem of the riddle of the incommensurable root has passed through a history full of trials and tribulations among the philosophers and theologians of Isfahan. Most of the philosophers who have dealt with this issue belong to the School of Mulla Rajabali Tabrizi. By the philosophers of Isfahan we do not merely mean those who belonged to Isfahan but we have taken into consideration those who are either one of the important members of the philosophical school of Isfahan or are influenced by it. The riddle of the incommensurable root in the school of Isfahan has the following features:1. The philosophers of this era are heirs of the rich culture of the previous ages.2. Attraction to the riddle of the incommensurable root of the philosophers of this era is neither similar to the theologians nor to the logicians of the seventh century.3. In the philosophical school of Isfahan other issues have also been dealt with in addition to the above riddle. In some cases new riddles and paradoxes have been designed and brought under discussion.4. The tradition of writing only about the riddle of the incommensurable root which began in the Shiraz school of philosophy also continued in the school of Isfahan.5. The philosophers of Isfahan also continued the trend of insisting on the technique of fallacy from the viewpoint of its application similar to the logicians of the seventh century. From amongst the philosophers of Isfahan who have discussed this riddlewe can make mention of Mirdamad, Morad Ibn Ali Khan Tafrishi, Aqa Hossein Khansari, Mir Fazlullah Astarabadi, Muhammad Sarab Tonkaboni, Jeylani Isfahani, Sherwani, and Mulla Abdullah Jeylani Barhowi, presented two solutions for the riddle, one of which is thinking about the definition of statement, which is itself dubious and weak.