The tautological predication and the common technical predication and its application by Mirdamad in the issue of mental existence

One of the important issues in Islamic philosophy is the discussion of mental existence and its forms. Among the forms that have become mental, two forms have challenged the foundations of this issue. Forms of community of substance and width and community of transverse categories under each other. The main issue of this article is to show the application of the distinction between the first pregnancy and the common pregnancy in proving and solving the problems of mental existence in Mirdamad. The method of discussion will be library and historical method. The brief answer to this main question is that Mirdamad was able to give the same answer to the problem of mental existence by separating the two, which was later registered in the name of his student Mulla- Sadra. Meanwhile, Mirdamad has had a great impact on the development of the theory of predication and the distinction between the tautological and common technical predication.