CONTRADDICIBILITÀ DI NORME E APPLICABILITÀ DEL PRINCIPIO DI NON-CONTRADDIZIONE

This Ph. D. thesis is dedicated to two great problems of the logic of norms. The first problem is: Can norms be terms of the relation of logical contradiction? The second problem is: Is it possible to formulate a deontic principle of non-contradiction (i.e. a principle of contradiction valid for norms)? In chapter 1, I examine various philosophical presuppositions of the two questions. In chapter 2, I examine four ways of interpreting the two questions. In chapter 3, I propose my own hypothesis of the possibile formulation of deontic principle of non-contradiction.