Doing the right things–trivalence in deontic action logic
Piotr Kulicki, Robert Trypuz · PhilPapers (PhilPapers Foundation) · 2012
Abstract. Trivalence is quite natural for deontic action logic, where ac-tions are treated as good, neutral or bad. We present the ideas of trivalent deontic logic after J. Kalinowski and its realisation in a 3-valued logic of M. Fisher and two systems designed by the authors of the paper: a 4-valued logic inspired by N. Belnap’s logic of truth and information and a 3-valued logic based on nondeterministic matrices. Moreover, we com-bine Kalinowski’s idea of trivalence with deontic action logic based on boolean algebra.