«سلب لزوم» و «لزوم سلب» در شرطي سالبه كليه

"Negation of Necessity" and "Necessity of Negation" in the Universally Negative Conditional

There is a disagreement between Ibn Sina and Khadjeh Nasir in analyzing universally negative conditionals. Ibn Sina considers them as "negation of necessity", while the latter thinks of them in terms of "necessity of negation". Khadjeh Nasir emphasizes the difference between the two positions, and deems the former more general than the other one, but Qutb Razi claims that, according to Ibn Sinaʹs works, they are equal, despite their difference in meaning. The author in this article tries to show first, in the discussion between Khadjeh and Razi, Khadjeh Nasir is right; second, by reformulating Ibn Sinaʹs arguments, one can realize an important formal flaw in his analysis; third, Ibn Sinaʹs answers to this flaw arc not acccptablc; forth, one may find another answer to this problem by the help of Ibn Sinaʹs analysis, but it also falls short of resolving the issue. Therefore, the question remains open for farther endeavors.