OBLIGATION, FREE CHOICE, AND THE LOGIC OF WEAKEST PERMISSIONS
Albert Anglberger, N. Gratzl, Olivier Roy · The Review of Symbolic Logic · 2015
Abstract We introduce a new understanding of deontic modals that we callobligations as weakest permissions. We argue for its philosophical plausibility, study its expressive power in neighborhood models, provide a complete Hilbert-style axiom system for it and show that it can be extended and applied to practical norms in decision and game theory.