فهرست نشریات علمی دسترسی آزاد ایران

As a generalization of nullnorms, semi-t-operators are interesting both in theory and practical applications. In this paper, we investigate some properties of idempotent semi-t-operators on bounded. Furthermore, we propose two construction methods of idempotent semi-t-operators on bounded lattices containing only two different elements which are incomparable with $a$ but comparable with $b$. These methods are generalization of several known ones in the literature.